Yuken

PRESSURE CONTROLS

Spare Parts List

HT-03, 06, 10-**-*-22/2280/2290
HG-03, 06, 10-**-*-22/2290

A C

68

14 2

7 29

26 31 H / HC Type
11 38 Pressure Control Valves
23 4

15 1 25

28 9 Section "A" for
3 24
12 HT-*-**-*-2280 Models
16
22

18

5

List of Seals

Part Numbers Quantity

Item Name of Parts HT -03 HT -06 HT -10 HT-* HG-*
HG HG HG
22 O-Ring 3
23 O-Ring SO-NB-P4 SO-NB-P4 SO-NB-P4
24 O-Ring
25 O-Ring SO-NB-P6 SO-NB-P6 SO-NB-P6 4 4
26 O-Ring
28 O-Ring SO-NB-P9 SO-NB-P9 SO-NB-P9 1
29 O-Ring
31 Bonded Seal SO-NB-P9 SO-NB-P9 SO-NB-P9 2

SO-NA-P11 SO-NA-P15 SO-NA-P20 1 1

SO-NB-P18 SO-NB-P28 SO-NB-P32 2

SO-NB-P22 SO-NB-P28 SO-NB-P36 2 2

SG-FB-1/4 SG-FB-1/4 SG-FB-1/4 2

Used only for HG type with auxiliary pilot pressure (P).
Note: When ordering the seals, please specify the seal kit number from the table berow.

List of Seal Kits

Valve Model Numbers Seal Kit Numbers

HT-03-**-*-22/2280/2290 KS-HT-03-22
HT-06-**-*-22/2280/2290 KS-HT-06-22
HT-10-**-*-22/2280/2290 KS-HT-10-22
HG-03-**-22/2290 KS-HG-03-22
HG-03-**-P-22/2290 KS-HG-03-P-22
HG-06-**-22/2290 KS-HG-06-22
HG-06-**-P-22/2290 KS-HG-06-P-22
HG-10-**-22/2290 KS-HG-10-22
HG-10-**-P-22/2290 KS-HG-10-P-22

Note: No bonded seals are included in the seal kits.

H / HC Type Pressure Control Valves 249

Spare Parts List

HCT-03, 06, 10-**-*-22/2280/2290
HCG-03, 06, 10-**-*-22/2290

8 31
14 30
6 16 A

19 2
7 29
26 4
23

28

20 21

1 12 25

13 24 Section "A" for

3 27 22 HCT-*-**-*-2280 Models

17 10 18

9

5

List of Seals

Part Numbers Quantity

Item Name of Parts HCT -03 HCT -06 HCT -10 HCT-* HCG-*
HCG HCG HCG
22 O-Ring 3
23 O-Ring SO-NB-P4 SO-NB-P4 SO-NB-P4
24 O-Ring
25 O-Ring SO-NB-P6 SO-NB-P6 SO-NB-P6 4 4
26 O-Ring
27 O-Ring SO-NB-P9 SO-NB-P9 SO-NB-P9 1
28 O-Ring
29 O-Ring SO-NB-P9 SO-NB-P9 SO-NB-P9 2
31 Bonded Seal
SO-NA-P11 SO-NA-P15 SO-NA-P20 1 1

SO-NB-P12 SO-NB-P18 SO-NB-P22A 1 1

SO-NB-P18 SO-NB-P28 SO-NB-P32 2

SO-NB-P22 SO-NB-P28 SO-NB-P36 2 2

SG-FB-1/4 SG-FB-1/4 SG-FB-1/4 2

Used only for HCG type with auxiliary pilot pressure (P).
Note: When ordering the seals, please specify the seal kit number from the table below.

List of Seal Kits

Valve Model Numbers Seal Kit Numbers

HCT-03-**-*-22/2280/2290 KS-HCT-03-22
HCT-06-**-*-22/2280/2290 KS-HCT-06-22
HCT-10-**-*-22/2280/2290 KS-HCT-10-22
HCG-03-**-22/2290 KS-HCG-03-22
HCG-03-**-P-22/2290 KS-HCG-03-P-22
HCG-06-**-22/2290 KS-HCG-06-22
HCG-06-**-P-22/2290 KS-HCG-06-P-22
HCG-10-**-22/2290 KS-HCG-10-22
HCG-10-**-P-22/2290 KS-HCG-10-P-22

Note: No bonded seals are included in the seal kits.

250 H / HC Type Pressure Control Valves

PRESSURE CONTROLS

Pressure Reducing Valves / Pressure Reducing and Check Valves

Pressure reducing valves are used to set the pressure of a hydraulic circuit below that of the main circuit. In addition,
operation under remote control is possible by using the remote control port. Pressure reducing and check valves have
check valves, which allow a free flow from the secondary side to the primary.

C

Specifications Pressure Reducing Valves /
Pressure Reducing and Check Valves
Model Numbers Max. Max. Flow 1 2 Approx. Mass
Operating kg (lbs.)
Valve Name Pressure Setting Pressure Max. Flow Drain Flow

Threaded Sub-plate MPa (PSI) L /min L /min Threaded Sub-plate
Connection Mounting
MPa (PSI) (U.S.GPM) (U.S.GPM) Connection Mounting

Pressure RT-03-*-22* RG-03-*-22* 21 (3050) 0.7 - 1.0 ( 102 - 145) 40 (10.6) 0.8 - 1.0 4.3 ( 9.5) 4.5 ( 9.9)
Reducing RT-06-*-22* RG-06-*-22* 21 (3050) 1.0 - 20.5 ( 145 - 2970) 50 (13.2) (.21 - .26) 6.9 (15.2) 6.8 (15.0)
0.7 - 1.0 ( 102 - 145) 50 (13.2)
Valve RT-10-*-22* RG-10-*-22* 21 (3050) 1.0 - 1.5 ( 145 - 220) 100 (26.4) 0.8 - 1.1 12.0 (26.5) 11.0 (24.3)
RCT-03-*-22* RCG-03-*-22* 21 (3050) 1.5 - 20.5 ( 220 - 2970) 125 (33.0) (.21 - .29) 4.8 (10.6) 5.4 (11.9)
Pressure RCT-06-*-22* RCG-06-*-22* 21 (3050) 0.7 - 1.0 ( 102 - 145) 130 (34.3) 7.8 (17.2) 8.1 (17.9)
Reducing 1.0 - 1.5 ( 145 - 220) 180 (47.6) 1.2 - 1.5
RCT-10-*-22* RCG-10-*-22* 21 (3050) 1.5 - 10.5 ( 220 - 1520) 220 (58.1) (.32 - .40) 13.8 (30.4) 13.8 (30.4)
and 10.5 - 20.5 ( 1520 - 2970) 250 (66.0)
Check 0.7 - 1.0 ( 102 - 145) 40 (10.6) 0.8 - 1.0
Valve 1.0 - 20.5 ( 145 - 2970) 50 (13.2) (.21 - .26)
0.7 - 1.0 ( 102 - 145) 50 (13.2)
1.0 - 1.5 ( 145 - 220) 100 (26.4) 0.8 - 1.1
1.5 - 20.5 ( 220 - 2970) 125 (33.0) (.21 - .29)
0.7 - 1.0 ( 102 - 145) 130 (34.3)
1.0 - 1.5 ( 145 - 220) 180 (47.6) 1.2 - 1.5
1.5 - 10.5 ( 220 - 1520) 220 (58.1) (.32 - .40)
10.5 - 20.5 ( 1520 - 2970) 250 (66.0)

1. The max. flow rates are those shown at the primary pressure at 21 MPa (3050 PSI). Graphic Symbols
2. The drain flow rates are equal to pilot flow rates when differential pressure between RT / RG

primary and secondary pressure is at 20.5 MPa (2970 PSI).

Yuken can offer flanged connection valves described below. Remote control connection

For details, contact us. RCT / RCG

Model Numbers Max. Operating Max. Flow Remote control connection
Pressure L /min
RF/RCF-10-*-22* MPa (PSI)
RF/RCF-16-*-20* (U.S.GPM)
21
(3050) 250 (66)

500 (132)

Pressure Reducing (and Check) Valves 251

Model Number Designation

F- R T -03 -B -22 *

Special Seals Series Number Type of Mounting Valve Pres. Adj. Range Design Design Standards
Size MPa (PSI) Number
F: R: T : Threaded 03 None : Japanese Std. "JIS"
Special Seals Pressure Connection 06 B: 0.7-7 22 80 : European Design Std.
for Phosphate Reducing 10 (102-1020) 22 90 : N.American Design Std.
Ester Type Valves G: Sub-plate 03 22
Fluids Mounting 06 C: 3.5-14 22 None : Japanese Std. "JIS"
(Omit if not RC: 10 (510-2030) 22 80 : European Design Std.
required) Pressure T : Threaded 03 22 90 : N.American Design Std.
Reducing and Connection 06 H: 7-20.5 22
Check Valves 10 (1020-2970) 22
G: Sub-plate 03 22
Mounting 06 22
10 22
22

Attachment
Mounting bolts

Valve Model Socket Head Cap Screw N. American Design Std. Qty.
Numbers Japanese Std. "JIS" and European Design Std. 3/8-16 UNC 2 Lg.
3/8-16 UNC 2 Lg. 4
RG-03 M10 50 Lg. 3/8-16 UNC 2 Lg. 4
RG-06 M10 50 Lg. 6
RG-10 M10 50 Lg. 3/8-16 UNC 2-3/4 Lg. 4
RCG-03 M10 70 Lg. 3/8-16 UNC 3-1/4 Lg. 4
RCG-06 M10 80 Lg. 3/8-16 UNC 3-1/2 Lg. 6
RCG-10 M10 90 Lg.

Sub-plate

Valve Japanese Standard "JIS" European Design Standard N. American Design Standard Approx. Mass
Model kg (lbs.)
Numbers Sub-plate Thread Sub-plate Thread Sub-plate Thread
Model Numbers Size Model Numbers Size 1.6 (3.5)
RRCGG-03 Model Numbers Size
2.4 (5.3)
RRCGG-06 HGM-03-20 Rc 3/8 HGM-03-2080 3/8 BSP.F HGM-03-2090 3/8 NPT 3.0 (6.6)
4.8 (10.6)
RRCGG-10 HGM-03X-20 Rc 1/2 HGM-03X-2080 1/2 BSP.F HGM-03X-2090 1/2 NPT 5.7 (12.6)

HGM-06-20 Rc 3/4 HGM-06-2080 3/4 BSP.F HGM-06-2090 3/4 NPT

HGM-06X-20 Rc 1 HGM-06X-2080 1 BSP.F HGM-06X-2090 1 NPT

HGM-10-20 Rc 1-1/4 HGM-10-2080 1-1/4 BSP.F HGM-10-2090 1-1/4 NPT

HGM-10X-20 Rc 1-1/2 HGM-10X-2080 1-1/2 BSP.F HGM-10X-2090 1-1/2 NPT

Sub-plates are available. Specify the sub-plate model number from the table above. When sub-plates are not used, the mounting
surface should have a good machined finish.

The sub-plates are the same as those for H type pressure control valves. With the reducing and check valve, the sub-plate is used in a
position 180° turned (upside down) from the normal position. When mounting the sub-plate, be sure to bring the valve locating pin to
the sub-plate pin hole. For dimensions, see page 244 to 246.

Instructions
To adjust the pressure, loosen the lock nut and turn the pressure adjustment handle slowly clockwise for higher
pressures and anti-clockwise for lower pressures. After adjustments, do not forget to tighten the lock nut.

Connect the drain port directly to the reservoir in which case the pressure at the drain port should be kept at a low
back pressure close to the atmospheric pressure.

In case of "Threaded Connections", there are two threaded connection type primary pressure ports. They can be
connected each other in-line; one as an inlet and the other as an outlet or the valve can be used by plugging one of the
pressure ports.

252 Pressure Reducing (and Check) Valves

PRESSURE CONTROLS

RT-03-*-22/2280/2290

10 Model Numbers "A" Thd. Thread Size "C" Thd. C
(.39) Rc 3/8 "B" Thd. Rc 1/4
41 RT-03-*-22 3/8 BSP.F Rc 1/4 1/4 BSP.Tr
(1.61) RT-03-*-2280 3/8 NPT 1/4 BSP.F 1/4 NPT
Fully Extended RT-03-*-2290 1/4 NPT
148(5.83)

41 33 Remote Control Port
(1.61) (1.30) "B" Thd.

82 4.5 Drain Port Pressure Adj. Handle Pressure Reducing Valves /
(3.23) (.18) "B" Thd. INC. Pressure Reducing and Check Valves
Design 2280 Only
5
Primary Pressure (.20)
Gauge Connection
"C" Thd. 44
(1.73)
48 44 Dia.
(1.89) (1.73)

28 (1.10) 155 Lock Nut
(6.10) 14(.55) Hex.

85
(3.35)

Secondary Pressure Secondary Pressure 32 Primary Pressure
Gauge Connection Outlet Port (1.26) Inlet Port
"C" Thd. "A" Thd. "A" Thd.
2 Places
RT-0160-*-22/2280/2290
DIMENSIONS IN
MILLIMETRES (INCHES)

18.5 Fully Extended "D" Model Numbers "Q" Thd. Thread Size "T" Thd.
(.73) Rc 3/4 "S" Thd. Rc 1/4
RT-06-*-22 Rc 1/4 1/4 BSP.Tr
B RT-06-*-2280 3/4 BSP.F 1/4 BSP.F 1/4 NPT
RT-06-*-2290 3/4 NPT 1/4 NPT Rc 1/4
BC Remote Control Port RT-10-*-22 Rc 1-1/4 Rc 1/4 1/4 BSP.Tr
A "S" Thd. RT-10-*-2280 1-1/4 BSP.F 1/4 BSP.F 1/4 NPT
RT-10-*-2290 1-1/4 NPT 1/4 NPT

Drain Port Pressure Adj. Handle
"S" Thd.
Design 2280 Only 4.5 INC.
(.18)
Primary Pressure
Gauge Connection KL 44
"T" Thd. HJ (1.73)
Dia.
F
E Lock Nut
14(.55) Hex.

Secondary Pressure Secondary Pressure Primary Pressure
Gauge Connection Outlet Port Inlet Port
"T" Thd. "Q" Thd. N "Q" Thd.
2 Places

Model Numbers A B C Dimensions mm (Inches) K L N
RT-06
RT-10 96 48 36.5 DEFHJ 33 9 39
(3.78) (1.89) (1.44) (1.30) (.35) (1.54)
149 42 179 97.5 53.5
132 66 43 (5.87) (1.65) (7.05) (3.84) (2.11) 40 12 46
(5.20) (2.60) (1.69) (1.57) (.47) (1.81)
167 52 216 124 64
(6.57) (2.05) (8.50) (4.88) (2.52)

Pressure Reducing (and Check) Valves 253

RG-0063-*-22/2280/2290 Model Numbers Thread Size

"L" Thd. "N" Thd.

C RG-03/06-*-22 Rc 1/4 Rc 1/4
D RG-03/06-*-2280 1/4 BSP.F 1/4 BSP.Tr
RG-03/06-*-2290 1/4 NPT
1/4 NPT

B Port connection is not required for RG models
but an O-ring should be furnished.
39
Remote Control Port (1.54) Design 2280 Only Pressure Adj. Handle
"L" Thd. INC.
Fully Extended "A"
4.5 Primary Pressure
(.18) Inlet Port

Mounting Surface 44 11(.43) Dia. Through
(O-Rings Furnished) (1.73) 17.5(.69) Dia. Spotface
Dia. 4 Places

Lock Nut F
14(.55) Hex. HJ

K

Locating Pin Secondary Pressure
6(.24) Dia. Outlet Port

38 Drain Port Secondary Pressure
(1.50) Gauge Connection
6 "N" Thd.
(.24) E

Model Numbers A B Dimensions mm (Inches) J K
RG-03
RG-06 142 25 CDEFH 40.6 34.9
(5.59) (.98) (1.60) (1.37)
89 44.5 67 155.5 92.4
141 21.5 (3.50) (1.75) (2.64) (6.12) (3.64) 40 48
(5.55) (.85) (1.57) (1.89)
102 51 79 179 111
(4.02) (2.01) (3.11) (7.05) (4.37)

Note: For dimensions of the valve mounting surface see the dimensional drawing (page 244 & 245)

of the sub-plate used together.

DIMENSIONS IN

RG-10-*-22/2280/2290 MILLIMETRES (INCHES)

119 Model Numbers Thread Size
(4.69)
"A" Thd. "B" Thd.
59.5
(2.34) RG-10-*-22 Rc 1/4 Rc 1/4
RG-10-*-2280 1/4 BSP.F 1/4 BSP.Tr
RG-10-*-2290 1/4 NPT
1/4 NPT

Remote Control Port 27.5 39 Port connection is not required for RG models
"A" Thd. (1.08) (1.54) but an O-ring should be furnished.

Fully Extended Design 2280 Only Pressure Adj. Handle
147(5.79)
4.5 INC.
(.18)
Primary Pressure
44 Inlet Port
(1.73)
Dia. 42 11(.43) Dia. Through
(1.65)
Mounting Surface 17.5(.69) Dia. Spotface
(O-Rings Furnished) 6 Places

Lock Nut 216
14(.55) Hex. (8.50)
146
(5.75)

63
(2.48)

Locating Pin Secondary Pressure
6(.24) Dia. Outlet Port

38 Drain Port Secondary Pressure
(1.50) Gauge Connection
6 "B" Thd.
(.24) 92
(3.62)

Note: For dimensions of the valve mounting surface see the dimensional drawing (page 246) of the sub-plate used together.

254 Pressure Reducing (and Check) Valves

PRESSURE CONTROLS

RCT-03-*-22/2280/2290

10 (.39) (1.61) 148(5.83) Model Numbers "A" Thd. Thread Size "C" Thd. C
Fully Extended Rc 3/8 "B" Thd. Rc 1/4
RCT-03-*-22 3/8 BSP.F Rc 1/4 1/4 BSP.Tr
RCT-03-*-2280 3/8 NPT 1/4 BSP.F 1/4 NPT
RCT-03-*-2290 1/4 NPT

41

41 33 Remote Control Port
(1.61) (1.30) "B" Thd.

82 4.5 5 Drain Port Pressure Adj. Handle Pressure Reducing Valves /
(3.23) (.18) (.20) "B" Thd. INC. Pressure Reducing and Check Valves

Design 2280 Only

Primary Pressure (1.89) 44 44
Gauge Connection (1.73) (1.73)
"C" Thd. Dia.

28 (1.10) 155 (6.10) Lock Nut
85 48 14(.55) Hex.

Secondary Pressure (3.35)
Gauge Connection
"C" Thd. 55 Primary Pressure Inlet Port or
(2.17) Reversed Free Flow Outlet Port
Secondary Pressure Outlet Port or "A" Thd.
Reversed Free Flow Inlet Port 2 Places
"A" Thd.
DIMENSIONS IN
RCT-1006-*-22/2280/2290 MILLIMETRES (INCHES)

BC Model Numbers "Q" Thd. Thread Size "T" Thd.
A Rc 3/4 "S" Thd. Rc 1/4
18.5 Fully Extended "D" RCT-06-*-22 Rc 1/4 1/4 BSP.Tr
Design 2280 Only (.73) RCT-06-*-2280 3/4 BSP.F 1/4 BSP.F 1/4 NPT
Primary Pressure RCT-06-*-2290 3/4 NPT 1/4 NPT Rc 1/4
Gauge Connection B RCT-10-*-22 Rc 1-1/4 Rc 1/4 1/4 BSP.Tr
"T" Thd. RCT-10-*-2280 1-1/4 BSP.F 1/4 BSP.F 1/4 NPT
Remote Control Port RCT-10-*-2290 1-1/4 NPT 1/4 NPT
"S" Thd.

4.5 Pressure Adj. Handle
(.18)
Drain Port
"S" Thd. INC.

44
(1.73)
Dia.

E KL Lock Nut
HJ 14(.55) Hex.

F

Secondary Pressure Primary Pressure Inlet Port or
Gauge Connection N Reversed Free Flow Outlet Port
"T" Thd.
"Q" Thd.
Secondary Pressure Outlet Port or 2 Places
Reversed Free Flow Inlet Port
"Q" Thd.

Model Numbers A B C Dimensions mm (Inches) K L N
RCT-06
RCT-10 96 48 36.5 DEFHJ 33 9 68
(3.78) (1.89) (1.44) (1.30) (.35) (2.68)
149 42 179 97.5 53.5
132 66 43 (5.87) (1.65) (7.05) (3.84) (2.11) 40 12 86
(5.20) (2.60) (1.69) (1.57) (.47) (3.39)
167 52 216 124 64
(6.57) (2.05) (8.50) (4.88) (2.52)

Pressure Reducing (and Check) Valves 255

RCG-0063-*-22/2280/2290 Model Numbers Thread Size

"N" Thd. "P" Thd.

D RCG-03/06-*-22 Rc 1/4 Rc 1/4
E RCG-03/06-*-2280 1/4 BSP.F 1/4 BSP.Tr
RCG-03/06-*-2290 1/4 NPT
1/4 NPT

C Port connection is not required for RCG models
B but an O-ring should be furnished.
Fully Extended "A"
Remote Control Port Design 2280 Only Pressure Adj. Handle
"N" Thd. INC.

4.5 Primary Pressure Inlet Port or
(.18) Reversed Free Flow Outlet Port

Mounting Surface 44 H 11(.43) Dia. Through
(O-Rings Furnished) (1.73) JK 17.5(.69) Dia. Spotface
Dia. 4 Places
L
Lock Nut
14(.55) Hex.

Locating Pin N Drain Port Secondary Pressure Outlet Port or
6(.24) Dia. F Reversed Free Flow Inlet Port

6 Secondary Pressure
(.24) Gauge Connection
"P" Thd.

Dimensions mm (Inches)
Model Numbers

ABCDEFHJ KL N

RCG-03 142 59 25 89 44.5 90 155 92.4 40.6 34.9 58
(5.59) (2.32) (.98) (3.50) (1.75) (3.54) (6.10) (3.64) (1.60) (1.37) (2.28)

RCG-06 141 69 21.5 102 51 108 179 111 40 48 68
(5.55) (2.72) (.85) (4.02) (2.01) (4.25) (7.05) (4.37) (1.57) (1.89) (2.68)

page 244 & 245

RCG-10-*-22/2280/2290 DIMENSIONS IN
MILLIMETRES (INCHES)

Remote Control Port Model Numbers Thread Size
"A" Thd.

119 "A" Thd. "B" Thd.
(4.69)
RCG-10-*-22 Rc 1/4 Rc 1/4
59.5 RCG-10-*-2280 1/4 BSP.F 1/4 BSP.Tr
(2.34) RCG-10-*-2290 1/4 NPT
1/4 NPT

27.5 Port connection is not required for RCG models
(1.08) but an O-ring should be furnished.

79 Design 2280 Only Pressure Adj. Handle
(3.11) INC.
4.5
Fully Extended (.18) Primary Pressure Inlet Port or
147(5.79) Reversed Free Flow Outlet Port

Mounting Surface 44 42 11(.43) Dia. Through
(O-Rings Furnished) (1.73) (1.65) 17.5(.69) Dia. Spotface
Dia. 6 Places

Lock Nut 216
14(.55) Hex. (8.50)
146
Locating Pin (5.75)
6(.24) Dia.
63
(2.48)

Secondary Pressure Outlet Port or
Reversed Free Flow Inlet Port

78 Drain Port Secondary Pressure
(3.07) Gauge Connection
6 "B" Thd.
(.24) 132
(5.20)

Note: For dimensions of the valve mounting surface see the dimensional drawing (page 246) of the sub-plate used together.

256 Pressure Reducing (and Check) Valves

PRESSURE CONTROLS

Pressure Drop for Reversed Free Flow

Hydraulic Fluid: Viscosity 35 mm2/s (164 SSU), Specific Gravity 0.850

PSI MPa RCT-03 RCT-06
RCG-03 RCG-06
35 0.25
Pressure Drop P 30 0.20 Pressure Drop P PSI MPa C
0.4
20 0.15
50
0.10 40 0.3
10 0.05
0.2
00 20
0 10 20 30 40 50 L /min
0.1
0 2.5 5.0 7.5 10.0 12.5 U.S.GPM 00 Pressure Reducing Valves /
Flow Rate Pressure Reducing and Check Valves
0 25 50 75 100 125 L /min

0 5 10 15 20 25 30 35 U.S.GPM
Flow Rate

RCT-10 For any other viscosity, multiply the factors in the table below.
RCG-10
PSI MPa mm2/s 15 20 30 40 50 60 70 80 90 100
Pressure Drop P 80 0.6 Viscosity

SSU 77 98 141 186 232 278 324 371 417 464

60 0.4 Factor 0.81 0.87 0.96 1.03 1.09 1.14 1.19 1.23 1.27 1.30

40 For any other specific gravity (G'), the pressure drop ( P') may be obtained
0.2 from the formula below.

20 P'= P (G'/0.850)
00
0 50 100 150 200 250 L /min

0 10 20 30 40 50 60 70 U.S.GPM
Flow Rate

Flow Rate vs. Secondary Pressure Pressure Adj. Range
"B"
Primary Pressure : 21 MPa (3050 PSI) "C"
Hydrauric Fluid : Viscosity 35 mm2/s (164 SSU) "H"

PSISecondary PressureMPaRT/RG-03 PSI MPa RT/RG-06 PSI MPa RT/RG-10
2000 Secondary Pressure14.0RCT/RCG-03200014.0RCT/RCG-06 2500 17.5 RCT/RCG-10
1980 Secondary Pressure13.9195013.8245017.3
1960 13.8 10 20 30 40 50 13.6 25 50 75 100 125 17.1 50 100 150 200 250
13.7 L/min 1000 13.4 L/min 2000 16.9 L/min
1000 13.6 950 1950 14.0
980 900 7.0 1900 13.8
960 7.0 850 6.8 1000 13.6
940 6.9 800 6.6 13.4
500 6.8 500 6.4 950 13.2
480 6.7 450 6.2 900
460 6.6 400 6.0 7.0
440 6.5 350 5.8 100 6.8
100 3.5 100 5.6 50 6.6
80 3.4 50 3.5 6.4
60 3.3 0 3.3 0 6.2
0 3.2 3.1 6.0
3.1 2.9 0.7
3.0 2.7 0.5
0.7 2.5 0.3
0.6 2.3 0.1
0.5 0.7
0.4 0.5 0
0.3

0 0 20 40 60 70
Flow Rate U.S. GPM
0

0 5 10 0 10 20 30 35
U.S. GPM Flow Rate U.S. GPM

Flow Rate

Pressure Reducing (and Check) Valves 257

Spare Parts List

RT/RG-03-*-22/2280/2290
RT/RG-06-*-22/2280/2290
RT/RG-10-*-22/2280/2290

6 21 7 8 2 31 9 10 11 13

A 23

20 32

30 30 26 37
34 32
23 5 Section "A" for
Design 2280
24

15
1
35 4

3 24

List of Seals

Part Numbers Quantity

Item Name of Parts RT -03 RT -06 RT -10 RT-* RG-*
RG RG RG

30 O-Ring SO-NB-P6 SO-NB-P6 SO-NB-P6 4 4
1
31 O-Ring SO-NA-P9 SO-NA-P9 SO-NA-P9 1 2
2
32 O-Ring SO-NB-P9 SO-NB-P9 SO-NB-P9 2
1
34 O-Ring SO-NB-P18 SO-NB-P28 SO-NB-P32

35 O-Ring SO-NB-P22 SO-NB-P28 SO-NB-P36 2

37 Bonded Seal SG-FB-1/4 SG-FB-1/4 SG-FB-1/4 1

Note: When ordering the seals, please specify the seal kit number from the table below.

List of Seal Kits

Valve Model Numbers Seal Kit Numbers

RT-03-*-22/2280/2290 KS-RT-03-22
RT-06-*-22/2280/2290 KS-RT-06-22
RT-10-*-22/2280/2290 KS-RT-10-22
RG-03-*-22/2280/2290 KS-RG-03-22
RG-06-*-22/2280/2290 KS-RG-06-22
RG-10-*-22/2280/2290 KS-RG-10-22

Note: No bonded seals are included in the seal kits.

258 Pressure Reducing (and Check) Valves

PRESSURE CONTROLS

Spare Parts List

RCT/RCG-03-*-22/2280/2290
RCT/RCG-06-*-22/2280/2290
RCT/RCG-10-*-22/2280/2290

C

11 26 12 13 2 31 14 15 16 18 23

A 7 30 20 Pressure Reducing Valves /
33 32 29 Pressure Reducing and Check Valves
25 6 32
5 10
30 9
4
34
28

1
35
3

24

List of Seals 36 37

Item Name of Parts RRCCGT -03 Part Numbers RRCCGT -10 Quantity Section "A" for
RRCCGT -06 Design 2280
RCT-* RCG-*

30 O-Ring SO-NB-P6 SO-NB-P6 SO-NB-P6 4 4
1
31 O-Ring SO-NA-P9 SO-NA-P9 SO-NA-P9 1 2
1
32 O-Ring SO-NB-P9 SO-NB-P9 SO-NB-P9 2
2
33 O-Ring SO-NB-P12 SO-NB-P18 SO-NB-P22A 1 1

34 O-Ring SO-NB-P18 SO-NB-P28 SO-NB-P32

35 O-Ring SO-NB-P22 SO-NB-P28 SO-NB-P36 2

37 Bonded Seal SG-FB-1/4 SG-FB-1/4 SG-FB-1/4 1

Note: When ordering the seals, please specify the seal kit number from the table below.

List of Seal Kits

Valve Model Numbers Seal Kit Numbers

RCT-03-*-22/2280/2290 KS-RCT-03-22
RCT-06-*-22/2280/2290 KS-RCT-06-22
RCT-10-*-22/2280/2290 KS-RCT-10-22
RCG-03-*-22/2280/2290 KS-RCG-03-22
RCG-06-*-22/2280/2290 KS-RCG-06-22
RCG-10-*-22/2280/2290 KS-RCG-10-22

Note: No bonded seals are included in the seal kits.

Pressure Reducing (and Check) Valves 259

Pressure Reducing and Relieving Valves

Pressure reducing and relieving valves are
composite pressure control valves having
pressure reducing and counterbalancing
functions developed for hydraulic balancing
circuits.

Specifications

Model Numbers Max. Pres. Adj. Relieving Drain Approx.
Operating Range Max. Flow Flow Flow Mass
Pressure
MPa (PSI) L /min L /min L /min kg (lbs.)

MPa (PSI) 0.6-13.5 (U.S.GPM) (U.S.GPM) (U.S.GPM) 4.2
(90-1960) (9.3)
RBG-03-*-10* 14 0.8-24.5 50 50 0.6-1
(2030) (120-3550) (13.2) (13.2) (.16-.26) 11
(24.3)
RBG-06-*-10* 25 125 125 1.5-2
(3630) (33) (33) (.40-.53)

Model Number Designation G -03 -R -10 *
F- RB
Design Number Design
Special Seals Series Number Type of Mounting Valve Size Drain Type 10 Standards

F: RB: G: 03 None: 10 Refer to
Internal Drain
Special Seals Pressure Sub-plate
for Phosphate Reducing Mounting R:
Ester Type and 06 External Drain
Fluids Relieving
(Omit if not Valves
required)

Design Standards: None ........... Japanese Standard "JIS" Graphic Symbols
80 ............... European Design Standard
90 ............... N. American Design Standard

Attachment
Mounting Bolts

Socket Head Cap Screw (4 pcs.) Internal drain

Valve Model Numbers Japanese Standard "JIS" N. American Design Standard
RBG-03 European Design Standard

M10 65 Lg. 3/8-16 UNC 2-1/2 Lg.

RBG-06 M10 70 Lg. 3/8-16 UNC 2-3/4 Lg.

Sub-plate External drain

Valve Model Japanese Standard "JIS" European Design Standard N. American Design Standard Approx.
Numbers Mass
Sub-plate Thread Sub-plate Thread Sub-plate Thread
Model Numbers Size Model Numbers Size Model Numbers Size kg (lbs.)

RBG-03 RBGM-03-10 Rc 3/8 RBGM-03-1080 3/8 BSP.F RBGM-03-1090 3/8 NPT 1.6
RBGM-03X-10 Rc 1/2 RBGM-03X-1080 1/2 BSP.F RBGM-03X-1090 1/2 NPT (3.5)

RBG-06 RBGM-06-10 Rc 3/4 RBGM-06-1080 3/4 BSP.F RBGM-06-1090 3/4 NPT 4.8
RBGM-06X-10 Rc 1 RBGM-06X-1080 1 BSP.F RBGM-06X-1090 1 NPT (10.6)

Sub-plates are available. Specify the sub-plate model number from the table above. When sub-plates are not used, the mounting surface should have a
good machined finish.

Instructions

To use remote control relief valve in the venting circuit, see page 203. If the internal volume of the vent line is too
large, chattering is likely to occur. Thus, as far as possible reduce the inside diametre and the length of the pipe.

To adjust the pressure, loosen the lock nut and turn the pressure adjustment handle slowly clockwise for higher
pressures and anti-clockwise for lower pressures. After adjustments, do not forget to tighten the lock nut.

Pressure is limited by collars fitted. If a working pressure cannot be attained, remove some collars. One collar is
equivalent to 10 MPa (1450 PSI).

Connect the tank pipe not to any other line but directly to the reservoir.

260 Pressure Reducing and Relieving Valves

PRESSURE CONTROLS

RBG-03-*-10/1080/1090 42.9 Tank Port
(1.69)
62 11(.43) Dia. Through
(2.44) 17.5(.69) Dia. Spotface
4 Places
10
(.39) Two Collars
11.1
(.44)

89 Model Numbers "A" Thd. C
(3.50) Rc 1/4
66.7 *RBG-03- -10
(2.63) *RBG-03- -1080 1/4 BSP.F
*RBG-03- -1090 1/4 NPT

Drain Port "A" Thd. 15 Lock Nut 30
(Only for External Drain Type) 14(.55) Hex. (1.18)
(.59)
Primary Pressure Port 73 Secondary Pressure Port 75
(2.95)
(2.87)
97.5
Vent Port Pressure Adj. Handle (3.84)
INC.
Fully Extended Pressure Reducing and
156 Relieving Valves

(6.14)

95 44(1.73)
(3.74) Dia.
52
(2.05)
50
(1.97)

Mounting Surface
(O-Rings Furnished)

Sub-plate : RBGM-0033X -10/1080/1090 DIMENSIONS IN
MILLIMETRES (INCHES)

10 102(4.02) "A" Thd. 3 Places
(.39) (From Rear)
82(3.23)
1.7 61(2.40) 10(.39)
(.07) 21
(.83)

66.7(2.63) 8
58.7(2.31) (.31)
33.3(1.31) 70(2.76)
7.9 90(3.54)
(.31)

14(.55) Dia. 7.1(.28) 8.8(.35) Dia. Through
3 Places
21.4(.84) 14(.55) Dia. Spotface
"C" Thd.
20(.79) Deep 35.7(1.41) 4 Places
19.5 42.9(1.69)
4 Places (.77) 6.2(.24) Dia.

"B" Thd. Sub-plate "A" Thd. "B" Thd. "C" Thd.
(From Rear) Model Numbers
Rc 3/8 Rc 1/4 M10
15(.59) RBGM-03-10 3/8 BSP.F 1/4 BSP.F 3/8-16 UNC
16(.63) 3/8 NPT 1/4 NPT
RBGM-03-1080 M10
32(1.26) Rc 1/2 Rc 1/4 3/8-16 UNC
RBGM-03-1090 1/2 BSP.F 1/4 BSP.F
1/2 NPT 1/4 NPT
RBGM-03X-10

RBGM-03X-1080

RBGM-03X-1090

Pressure Reducing and Relieving Valves 261

RBG-06-*-10/1080/1090 217.5
(8.56)

115 60.3 Tank Port
(2.37)
(4.53) 11(.43) Dia. Through
Fully Extended 17.5(.69) Dia. Spotface
4 Places
Model Numbers "A" Thd. Primary Pressure Port 74.4(2.93)
Rc 3/8
*RBG-06- -10 12.3
*RBG-06- -1080 3/8 BSP.F (.48)
*RBG-06- -1090 3/8 NPT

79.4
(3.13)
104
(4.09)

Pressure Adj. Handle Two Collars Lock Nut Secondary Pressure Port
INC. 14(.55) Hex. Drain Port

Vent Port
"A" Thd.

44(1.73)
Dia.

56
(2.20)

57
(2.24)

116
(4.57)

139
(5.47)

Sub-plate : RBGM-0066X -10/1080/1090 Mounting Surface
(O-Rings Furnished)

DIMENSIONS IN
MILLIMETRES (INCHES)

12 150 23(.91) Dia.
(.47) (5.91) 3 Places
126
"J" Thd. (4.96) 11(.43) Dia. Through
18(.71) Deep 33 60.3 17.5(.69) Dia. Spotface
(1.30) (2.37) 4 Places
4 Places 49.2
(1.94)
30.1 8.6(.34) 22
(.87)
(1.19)
11.1 12
(.44) (.47)

C 39.7 Model Dimensions mm (Inches)
B (1.56) Numbers
A 73 ABCDE
(2.87) RBGM-06
79.4 20.7 65.7 95 37.1 89.1
(3.13) RBGM-06X (.81) (2.59) (3.74) (1.46) (3.51)
116 20.4 69.7 98.4 32.5 93.8
(4.57) (0.80) (2.74) (3.87) (1.28) (3.69)
140
(5.51)

"F" Thd. 3 Places D 6.2(.24) Dia. Sub-plate Thread Size
(From Rear) E "H" Thd. (From Rear) Model Numbers "H" Thd.

19(.75) RBGM-06-10 "F" Thd. Rc 1/4 "J" Thd.
20(.79) RBGM-06-1080 Rc 3/4 1/4 BSP.F M10
RBGM-06-1090 1/4 NPT
45 RBGM-06X-10 3/4 BSP.F 3/8-16 UNC
(1.77) RBGM-06X-1080 3/4 NPT Rc 1/4 M10
RBGM-06X-1090 1/4 BSP.F
Rc 1 1/4 NPT 3/8-16 UNC
1 BSP.F
1 NPT

262 Pressure Reducing and Relieving Valves

PRESSURE CONTROLS

Nominal Override Characteristics

Hydraulic Fluid: Viscosity 35 mm2/s (164 SSU) , Specific Gravity 0.850

Relieving
Reducing

PSI MPa RBG-03 PSI MPa RBG-06
1600 11.1 3000 21
1550 10.7 2850 20 C
1500 10.3 2700 19
Secondary Pressure 1450 Secondary Pressure
7.6 2450 17
1100 7.2 2300 16
1050 6.8 2150 15
1000
1900 13
950 1850 12
1600 11
600 4.1 Pressure Reducing and
550 3.7 1300 9 Relieving Valves
500 3.3 1150 8
450 1000 7

130 0.9 750 5
90 0.6 600 4
50 0.3 450 3

0 10 20 30 40 50 L/min 0

0 25 50 75 100 125 L/min

0 2.5 5.0 7.5 10.0 12.5 U.S. GPM 10 20 30 U.S. GPM
Flow Rate Flow Rate

Min. Adj. Pressure & Vent Pressure RBG-06

Hydraulic Fluid: Viscosity 35 mm2/s (164 SSU) , Specific Gravity 0.850 PSI MPa
170 1.2
Min. Adj. Pressure
Vent Pressure 160 1.1

RBG-03 140 1.0
0.9
PSI MPa Pressure
0.9 120
0.8
120 0.8
70 0.5
Pressure 80 0.6 60 0.4

0.4 40 0.3

40 0.2
0.2 20

0.1

0 0 0 0
0 10 20 30 40 50 L/min 0 25 50 75 100 125 L/min

0 2.5 5.0 7.5 10.0 12.5 U.S. GPM 0 10 20 30 U.S. GPM
Flow Rate Flow Rate

Pressure Drop

Hydraulic Fluid: Viscosity 35 mm2/s (164 SSU) , Specific Gravity 0.850

RBG-03 RBG-06

PSI MPa PSI MPa
60 0.4 60 0.4

Pressure Drop P 0.3 Pressure Drop P 40 0.3
40
0.2
0.2 20
20
0.1
0.1
00
00 0 25 50 75 100 125 L/min
0 10 20 30 40 50 L/min

0 2.5 5.0 7.5 10.0 12.5 U.S. GPM 0 10 20 30 U.S. GPM
Flow Rate Flow Rate

For any other viscosity, multiply the factors in the table below. For any other specific gravity (G'), the pressure drop ( P') may
be obtained from the formula below.
mm2/s 15 20 30 40 50 60 70 80 90 100
Viscosity P'= P (G'/0.850)

SSU 77 98 141 186 232 278 324 371 417 464

Factor 0.81 0.87 0.96 1.03 1.09 1.14 1.19 1.23 1.27 1.30

Pressure Reducing and Relieving Valves 263

Spare Parts List

RBG-03-*-10/1080/1090

19 23 6 7 21 14 13 8 18 11 9 10 22 12

List of Seals Part Numbers Qty. Remarks
SO-NB-P24
Item Name of Parts SO-NB-P18 1
15 O-Ring SO-NB-P9 3 Included in
16 O-Ring SO-NA-P9
17 O-Ring Seal Kit
18 O-Ring 1 Kit No. : KS-RBG-03-10

1

4 15 3 5 2 1 17 16

RBG-06-*-10/1080/1090 23
22
10 11 16 7 21 20 11 19 17 Design 1080 Only

18 5 14 4 1 2 13 3 15 12 6 9 11 8 8

List of Seals

Item Name of Parts Part Numbers Qty. Remarks

11 O-Ring SO-NB-P9 2

12 O-Ring SO-NB-P24 1 Included in
13 O-Ring SO-NB-P28 3 Seal Kit
14 O-Ring SO-NB-P30 1 Kit No. : KS-RBG-06-10

21 O-Ring SO-NA-P9 1

22 Bonded Seal SG-FB-3/8 1

Note: No bonded seals are included in the seal kits.

264 Pressure Reducing and Relieving Valves

PRESSURE CONTROLS

Unloading Relief Valves C

These valves are used to operate the pumps with minimum load in Unloading Relif Valves
accumulator circuits or in high-low pump circuits.
In accumulator circuits, when the system pressure reaches to a cut out
pressure (adjusted maximum), the valve acts to divert the pump
delivery to the reservoir at low pressure, thus the pump is unloaded
automatically.
When the accumulator pressure drops to the cut in pressure (refer to
characteristic chart on page 269), the valve directs the pump delivery
to the accumulator and hydraulic system.
An integral check valve prevents reverse flow through the valve from
the accumulator.
In high-low pump circuits, the valve acts to unload the large volume
pump with the same manner as described above during load operation
of the small volume pump.

Specifications Max. Max. Flow Approx. Mass
Operating Pres.
Model Numbers L /min kg(1bs.)
MPa (PSI) (U.S.GPM)
BUCG-06-**-30/3080/3090
BUCG-10-**-25/2580/2590 21 (3050) 125 12
(33) (26.5)

250 21.5
(66) (47.4)

Model Number Designation

F- BUC G -06 -B V -30 *

Special Seals Series Number Type of Valve Cut-out Pres. High Venting Design Design Standards
Mounting Size Adj. Range Pres. Feature Number
MPa (PSI) None:
V: 30 Japanese
F: BUC: G: B: 2.5-7.0 For High Std. "JIS"
06 (360-1020) Venting 25
Special Seals Unloading Sub-plate Pressure 80: European
for Phosphate Relief Valve Mounting C: 3.5-14 Feature Design Std.
Ester Type (510-2030) (Omit if not
Fluids required) 90: N. American
(Omit if not 10 H: 7.0-21 Design Std.
required) (1020-3050)

Use the high-venting-pressure type to reduce the shift time from unloading to onloading.

Pilot-drain system Graphic Symbol

A pilot-drain system is typically configured with an external pilot and an external drain, as
indicated by the right graphic symbol. However, customized pilot-drain systems with an internal
pilot are also available.
For the internal pilot type, the design standard number at the end of the model number is uniquely
assigned. Refer to the table below for the internal pilot type. Please contact us for details.

Pilot & Graphic European Design N. American Design Japanese Std.
Drain Conn. Symbols Standard Standard "JIS"

Int. Pitot- BUCG-06-**-30801 BUCG-06-**-30901 BUCG-06-**-3001
Int. Drain BUCG-10-**-25801 BUCG-10-**-25901 BUCG-10-**-2501

Int. Pitot- BUCG-06-**-30802 BUCG-06-**-30902 BUCG-06-**-2502
Ext. Drain

Unloading Relief Valves 265

Instructions
To adjust the pressure, loosen the lock nut and turn the pressure adjustment handle slowly clockwise for higher
pressures or anti-clockwise for lower pressures. After adjustments, do not forget to tighten the lock nut.

Take care not to neglect connecting the drain pipe to the reservoir; otherwise not only will the valve fail to operate
properly but also the line pressure will rise infinitely. Extend the end of the drain pipe into fluid.

Limit the pressure drop between the valve and the accumulator in an accumulator circuit below 10% of the cut-out
pressure.

Limit the drain port back pressure below 2% of the cut-out pressure.

Attachment
Mounting Bolts

Valve Model Socket Head Cap Screw
Numbers
BUCG-06 Japanese Std. "JIS" and European Design Std. N. American Design Std.

BUCG-10 M16 55Lg. (2 pcs.) 5/8-11 UNC 2-1/4 Lg. (2 pcs.)
M16 110Lg. (2 pcs.) 5/8-11 UNC 4-1/2 Lg. (2 pcs.)
M16 130Lg. (2 pcs.) 5/8-11 UNC 5 Lg. (2 pcs.)

M20 70Lg. (2 pcs.) 3/4-10 UNC 2-3/4 Lg. (2 pcs.)
M20 160Lg. (4 pcs.) 3/4-10 UNC 6-1/2 Lg. (4 pcs.)

Sub-plate

Valve Japanese Standard "JIS" European Design Standard N. American Design Standard Approx.
Model Mass
Numbers Sub-plate Thread Sub-plate Thread Sub-plate Thread
Model Numbers Size Model Numbers Size kg (lbs.)
BUCG-06 Model Numbers Size
4.4 (9.7)
BUCG-10 BUCGM-06-20 Rc 3/4 BUCGM-06-2080 3/4 BSP.F BUCGM-06-2090 3/4 NPT
7.2 (15.9)
BUCGM-10-20 Rc 1-1/4 BUCGM-10-2080 1-1/4 BSP.F BUCGM-10-2090 1-1/4 NPT

Sub-plates are available. Specify the sub-plate model number from the table above. When sub-plates are not used, the mounting surface
should have a good machined finish.

266 Unloading Relief Valves

PRESSURE CONTROLS

BUCG-06-**-30/3080/3090 Model Numbers "A" Thd. "B" Thd.
Rc 1/4 Rc 1/4
130 BUCG-06-**-30
(5.12) BUCG-06-**-3080 1/4 BSP.Tr 1/4 BSP.F
127 BUCG-06-**-3090 1/4 NPT 1/4 NPT
(5.00)
90 Fully Extended Drain Port C
(3.54) 152 "B" Thd.
50 External Pilot Port
(1.97) "B" Thd. (5.98) Lock Nut
32.5 51.5 1 14(.55) Hex.
(1.28) Pressure Adjustment Handlle
(2.03) (.04)
Mounting Surface INC.
(O-Rings Furnished) 44(1.73) Dia.
60.5 (2.38)
17.5(.69) Dia. Through Unloading Relif Valves
6(.24) Dia. 26(1.02) C' bore 169 (6.65)
Two Locating Pins 2 Places
83.5 (3.29)
6 Accumulator or
(.24) System Port

88 Pressure Inlet Port 52 Pressure Gauge Connection
(3.46) (2.05) "A" Thd.
Tank Port 104
90 (4.09) 17.5(.69) Dia. Through
(3.54) 26(1.02) Dia. Spotface
4 Places
108
(4.25)

110
(4.33)

128
(5.04)

Sub-plate DIMENSIONS IN
BUCGM-06-20/2080/2090 MILLIMETRES (INCHES)

102 12 40
(.47) (1.57)
(4.02) 4
11(.43) Dia. Through 78 (.16) 20
17.5(.69) Dia. Spotface (.79)
4 Places (3.07) 27.5 19
70 (1.08) (.75)
"A" Thd. Through
6 Places (2.76) 12
35 (.47)

(1.38)

11 (.43) (1.31) (2.19) (1.32) 66.7 46 (1.81) (6.61) (7.56)
33.3 55.5 33.5
168 192 145
(5.71)
7(.28) Dia. 8(.31) Deep
2 Places (2.63)

23(.91) Dia.
"B" Thd. (From Rear)
3 Places

Sub-plate Model No. "A" Thd. "B" Thd.
BUCGM-06-20 M16 Rc 3/4
BUCGM-06-2080 M16
BUCGM-06-2090 3/4 BSP.F
5/8-11 UNC 3/4 NPT

Unloading Relief Valves 267

BUCG-10-**-25/2580/2590 Model Numbers "A" Thd. "B" Thd.
Rc 1/4 Rc 1/4
BUCG-10-**-25
BUCG-10-**-2580 1/4 BSP.Tr 1/4 BSP.F
BUCG-10-**-2590 1/4 NPT 1/4 NPT

159 External Pilot Port Drain Port Lock Nut
(6.26) "B" Thd. "B" Thd. 14(.55) Hex.
117 Pressure Adjustment Handlle
(4.61) 21.5(.85) Dia. Through Fully Extended
45.5 32(1.26) C' bore 154.5 INC.
(1.79) 2 Places (6.08)

Mounting Surface 57
(O-Rings Furnished) (2.24)

6(.24) Dia. Accumulator or System Port 44(1.73) 72.1 (2.84)
Two Locating Pins Dia.
205 (8.07)

Pressure Gauge Connection 107.9 (4.25)
"A" Thd.
6 67 Pressure Inlet Port 60 21.5(.85) Dia. Through
(.24) (2.64) (2.36) 32(1.26) Dia. Spotface
Tank Port 120 4 Places
136 (4.72)
(5.35)

137
(5.39)

Sub-plate DIMENSIONS IN
BUCGM-10-20/2080/2090 MILLIMETRES (INCHES)

120 14 45
(4.72) (.55) (1.77)
4.7
11(.43) Dia. Through 92 (.19) 20
17.5(.69) Dia. Spotface (3.62) (.79)
4 Places 32 19
82.5 (1.26) (.75)
"A" Thd. Through (3.25)
6 Places 14
41.3 (.55)
(1.63)

12.7 (.50) (.75) 76.2 38 (3.00) (1.50) (2.01) 204 (8.03) 232 (9.13)
19 44.5 88.9 51
190
7(.28) Dia. 8(.31) Deep (1.75) (3.50) (7.48)
2 Places
Sub-plate Model No. "A" Thd. "B" Thd.
28(1.10) Dia. BUCGM-10-20 M20 Rc 1-1/4
"B" Thd. (From Rear) BUCGM-10-2080 M20 1-1/4 BSP.F
3 Places BUCGM-10-2090 1-1/4 NPT
3/4-10 UNC
268
Unloading Relief Valves

PRESSURE CONTROLS

Cut-in Pressure vs. Cut-out Pressure

Hydraulic Fluid: Viscosity 35 mm2/s (164 SSU), Specific Gravity 0.850

BUCG-06,10

PSI MPa

2500 18
16

2000 C

Cut-in Pressure 12
1500

1000 8

500 4 5 10 15 20 MPa Unloading Relif Valves
00 3000 PSI
0

0 1000 2000

Cut-out Pressure

Unloading Pressure vs. Flow

Hydraulic Fluid: Viscosity 35 mm2/s (164 SSU), Specific Gravity 0.850

BUCG-06 BUCG-10

Unloading Pressure PSI MPa High Venting Unloading Pressure PSI MPa High Venting
Pressure Feature 1.2 Pressure Feature
1.0
Standard 150 1.0 Standard
125 125
0.8
0.8
100 100
0.6
0.6
75 75
50 0.4 50 0.4

25 0.2 25 0.2
0 00
0
0
0 50 100 150 L /min 0

0 10 20 30 40 100 200 300 L /min

Flow Rate U.S.GPM 20 40 60 80
Flow Rate U.S.GPM

Pressure Drop for Check Valve

Hydraulic Fluid: Viscosity 35 mm2/s (164 SSU), Specific Gravity 0.850

BUCG-06 BUCG-10

PSI MPa PSI MPa
60 0.4 60 0.4

Pressure Drop P 40 0.3 Pressure Drop P 40 0.3
0.2
0.2
20 20
0.1
0.1
00 00
0 50 100 150 200 250 300 L /min
0 50 100 150 L /min

0 10 20 30 40 0 20 40 60 80

U.S.GPM U.S.GPM

Flow Rate Flow Rate

For any other viscosity, multiply the factors in the table below. For any other specific gravity (G'), the pressure drop ( P') may
be obtained from the formula below.
mm2/s 15 20 30 40 50 60 70 80 90 100
Viscosity P'= P (G'/0.850)

SSU 77 98 141 186 232 278 324 371 417 464

Factor 0.81 0.87 0.96 1.03 1.09 1.14 1.19 1.23 1.27 1.30

Unloading Relief Valves 269

Spare Parts List

BUCG-06-**-30/3080/3090
BUCG-10-**-25/2580/2590

22 6 31 5 4 3 16 29 12 13 14 17

18 26

33 8

27

20 32

19 28 35

21 23 25
30 9 15
34 27 10
24 11

1

List of Seals

Item Name of Parts Part Numbers Quantity

BUCG-06 BUCG-10

28 O-Ring SO-NB-P6 SO-NB-P6 3

29 O-Ring SO-NA-P9 SO-NA-P9 1

30 O-Ring SO-NB-P11 SO-NB-P9 1

31 O-Ring SO-NB-P12 SO-NB-P12 1

32 O-Ring SO-NB-P18 SO-NB-P18 1

33 O-Ring SO-NB-P24 SO-NB-P32 1

34 O-Ring SO-NB-P28 SO-NB-P32 5

35 O-Ring SO-NB-P32 SO-NB-P45 1

Note: When ordering the seals, please specify the seal kit number from the table below.

List of Seal Kits Seal Kit Numbers
KS-BUCG-06-30
Valve Model Numbers KS-BUCG-10-25
BUCG-06
BUCG-10

270 Unloading Relief Valves

PRESSURE CONTROLS

Brake Valves C

Brake valves are used on hydraulic cylinders and in brake circuits of
hydraulic motors. They can brake with any pressure, permitting
smooth stopping.

Graphic Symbols

AB AB AB Breake Valves

T T T

03 03 03
UBGR-06-A UBGR-06-B UBGR-06-W

10 10 10

Specifications Max. Pres. Adj. Max. Flow
Operating Range
Model Numbers Pressure L/min (U.S.GPM)
MPa (PSI) MPa (PSI)
UBGR – 03 – * – B – 20 * 0.7 - 7.0 (100 - 1020) 50 (13.2)
UBGR – 03 – * – H – 20* 25 3.5 - 25 (510 - 3630) 125 (33.0)
UBGR – 06 – * – 20 * (3630) 200 (52.8)
UBGR – 10 – * – 20 * 0.7 - 25 (100 - 3630)
0.7 - 25 (100 - 3630)

Model Number Designation -03 -A -B -20 *
F- UBGR
Valve Size Type Pres. Adj. Range Design Number Design
Special Seals Series Number MPa (PSI) Standards
03 A: 20
F: UBGR: For A-Line B: 0.7-7.0 Refer to
06 B: (100-1020) 20
Special Seals Brake 10 For B-Line 20
for Phosphate Valves, W: H: 3.5-25
Ester Type Sub-plate For A•B-Lines (510-3630)
Fluids Mounting
(Omit if not None: 0.7-25
required) (100-3630)

Design Standards: None ........... Japanese Standard "JIS" and European Design Standard
90 ............... N. American Design Standard

Consult Yuken when detailed material such as dimensions figures is required.

Breake Valves 271

Semiconductor Type Pressure Switches

These pressure switches have built-in electronic circuit on a semiconductor
pressure sensor and an open collector insulated by a photocoupler has been
used as output. As the use of semiconductor has put movable parts away from
the sensor section, high reliability and durability can be obtained.
These pressure switches are suitable for the applications not only compact,
light weight and vibration-proof are required but also better substitute to
conventional pressure switches.

Model Number Designation –100 –11
J T –02
Max. Design
Series Number Type of Mounting Valve Size Setting Pressure Number

J: Semiconductor T: Threaded 02 MPa (PSI) 11
Type Pressure Connection
Switch 35 : 3.5 (510) Cable
100: 10 (1450)
200: 20 (2900) Electric Circuit
350: 35 (5080) Trimmer
LED Indicator
Specifications

Model Numbers JT– 02 JT– 02 JT– 02 JT– 02
Description – 35 – 11 – 100 – 11 – 200 – 11 – 350 – 11

Max. Operating MPa 10 10 20 35
Pressure (PSI) (1450) (1450) (2900) (5080)

Proof Pressure MPa 20 20 40 50
(PSI) (2900) (2900) (5800) (7250)

Pressure Setting Range MPa 0.1 – 3.5 1 – 10 2 – 20 3.5 – 35
(PSI) (15 – 510) (145 – 1450) (290 – 2900) (510 – 5080)

Pressure Setting Single adjustment: ON trimmer setting (variable resistor) Case
(ON pressure Setting)

Differential Pressure Setting Single adjustment: DIFF trimmer setting
(OFF Pressure Setting) (-1 to -10% of the ON pressure setting)

Sign on act When the ON pressure, the LED indicator lights. Pressure
Sensor

Output System Open collector (photocoupler insulated) Maximum Oil Pressure
operating voltage : 35 VDC; maximum current: 100 mA

Power Source 10 to 28 VDC (ripple included). A constant-voltage power
supply must be used. Curent consumption: 10 mA.
Insulation Resistance
Response Time 100 MΩ or more Graphic Symbol
Repeatability
Operating Temperature Range 1.5 ms 20 ms (damper contained)
Setting Fluctuation with
Temperature Drift Approx. 0.5 %
Storage Temperature Range
Dust-proofness -20 to +70 °C (-4 to 158 °F)
/Water-Proofness
Vibration-resistance 1% or less of the maximum operating pressure
Shock-resistance relative to 10 °C change.
Mass
-40 to +105 °C (-40 to 221 °F)

IEC Pub. 529 IP54

98 m/s2 (322 ft./s2) (10 – 55 Hz)
98 m/s2 (322 ft./s2)
17g (.39 lbs.)

Trimmer Rotation Angle: 0 to 260°

Instractions

Voltage-proof test should not be carried out as semiconductor has been used.

272 Semiconductor Type Pressure Switches

PRESSURE CONTROLS

DIMENSIONS IN

Differential Pressure LED Indicator MILLIMETRES (INCHES)
Setting Trimmer
Pressure Stting Trimmer
(DIFF Trimmer) (ON Trimmer)

R 1/4 Thd. LED Light ON Range

Four-Conductor Cabele
(5 mm (.197 in.) OD)
YUKWN KOGYO C
RED...... DIFF. ON ON Setting
30 (1.18) Dia. Power Supply (Selected on
34.6PRESSURE SWITCHON Trimmer)Differential
(1.36)BLK......Pressure
15 15 Power Supply 30 OFF Range
(.59) Semiconductor Type(1.18)OFF Setting
(.59) Pressure SwitchesWHT......(Selected on
41 2000 Output DIFF Trimmer)
(1.61) (78.7)
GRN...... LED Extinguished
Output

Adjustment 4. < Differntial pressure setting >
Gradually reduce pressure to obtain the required OFF
1. Before starting, turn the ON and DIFF trimmers fully pressure. Then, turn DIFF trimmer anti-clockwise
clockwise. (Trimmer Rotation Angle:0 – 260°) slowly and stop it when LED indicator goes off. The
OFF setting is now obtained.
2. Turn on the power.
5. Make sure if "ON" or "OFF" setting is correct by
3. < ON pressure setting > working of LED indicator when applying or reducing
Apply required pressure to the switch. Turn ON trimmer pressure repeatedly several times.
slowly anti-clockwise and stop it when LED indicator
lights, ON setting obtained.

Application Examples of Electrical Circuit Direct Relay Drive

Output Circuit of Semiconductor Type Pressure Switch Use relay operable at 100 mA or lower.
(Internal Circuit)
Connect surge voltage absorption diode (D) in parallel with the relay
Pressure Switch coil.
WHT Output
Connect pretective diode (D) between the white and green wires.
GRN Output
Pressure Switch Controller
WHT D

D Relay V
GRN 0V

D... Diode

Connection to Sequential Controller The usage below is possible because output circuit is
1. Sink System insulated by a photocoupler.

1. When AND circuit Two Pressures

Pressure Switch Sequential Controller Input Unit The sequential controller is signaled only when pressure switches

WHT No. 1 and 2 are both ON. Power
Supply
GRN Stabilized DC Power Supply Pressure WHT V
RED DC12/24V Switch No. 1
GRN
BLK
Pressure WHT
Switch No. 2 GRN

0V

2. Source System Sequential Controller Input Unit 2. When OR circuit two pressures

Pressure Switch The sequential controller is signaled when either of pressure switches
No. 1 and 2 is ON.

WHT Pressure WHT Power
Switch No. 1 Supply

GRN V

GRN Stabilized DC Power Supply Pressure WHT
RED DC12/24V Switch No. 2 GRN

BLK 0V

Semiconductor Type Pressure Switches 273

Pressure Monitoring System

The pressure monitoring system is for watching hydraulic system pressure

and is composed of highly reliable pressure sensor (SJT*-02-10) and
easy-to-use digital pressure monitor (DP*-*-*-10). There is no specific

model number code for the pressure monitoring system itself, therefore,
when ordering, specify the digital pressure monitor and pressure sensor
with respective model number code.

Remote pressure indication
Even if the monitor is located away from the unit, remote pressure
indication can be obtained by combination with special sensors.

Remote-setting pressure sensors
The pressure sensor can be used as a pressure switch with two
contacts: top and bottom. Pressure can be set and checked without
using any other pressure gauge, moreover, such pressure setting and
pressure check can be made when no pressure is applied in the
hydraulic system.

Digital Pressure Monitors

The digital pressure monitor indicates the system pressure and also
despatches signals when the system pressure reaches to the preset
pressure. The monitor can be separated from the sensor and installed
away from the sensor. The monitor and the sensor so separately installed
can be connected by wire, therefore, a long hydraulic piping is not
required. The digital pressure monitor provides high accuracy when it is

used with a special pressure sensor (SJT*-02-10).

Specifications

Model Input Voltage Output System Pressure setting
Numbers

DP20-*-*-10 0 – 4.5V / 0 – 19.6 MPa Open-collection Total 4 points:
DP35-*-*-10 (0 – 4.5V / 0 – 2842 PSI) output 2, high (HI) and low (LO)
40 V - 100 mA (max.) limits for 2 channels
0 – 4.5V / 0 – 34.3 MPa (each set independently)
(0 – 4.5V / 0 – 4974 PSI)

Pressure Sensor

The pressure sensor uses semiconductors and has no moving parts for
high reliability and durability.
It provides high accuracy when combined with the special monitor

(DP*-*-*-10).

Specifications

Model Numbers Rated Pres. Range Output Range Power Supply
DC 5.0 +_ 0.5 V
0 – 20 MPa Graphic Symbol
(0 – 2900 PSI)
SJT20-02-10 0.5 – 4.5 V
SJT35-02-10 0 – 35 MPa
(0 – 5080 PSI)

Proportional to supply voltage if this voltage is 5.00 V

Consult Yuken when detailed material such as dimensions figures is required.

274 Pressure Monitoring System

■ Solenoid Operated Directional Valves, DSG-005 Series

These DSG-005 series solenoid directional valves are the pro-ducts
newly developed as a “Mini-series”. Compared with DSG-01
series, the valve are much more compactly manufactured but enjoy a
maximum operating pressure of 25 MPa (3630 PSI) and a maximum
flow rate of 15 L/min (3.96 U.S.GPM), while contributing further to
a space saving requirement. Moreover, using wet armature
solenoids, the valves ensure the long life.

Flying Lead Wire Type

Plug-in Connector Type

■ Specifications

Model Numbers Max. Flow★ Max. Operating Max. Tank-Line Max. Changeover Approx. Mass
L/min Pressure Back Pressure Frequency kg
MPa min–1
(U.S.GPM) (PSI) MPa (lbs.)
(PSI) (Cycles/min)

DSG-005-3C - -40/4090 15 25 7 0.5 (1.1)
DSG-005-2B - -40/4090 (3.96) (3630) (1020) 120

0.4 (.9)

★ The maximum flow means the limited flow without inducing any abnormality to the operation (changeover) of the valve.
The maximum flow differs according to the type and operating conditions. For details, please refer to the “List of Standard Models and Maximum
Flow” on pages 338 to 339.

■ Solenoid Rating

Voltage (V) Current & Power at Rated Voltage

Electric Source Coil Type Frequency ★1 Holding Power
(Hz) (A) (W)
Source Rating Serviceable Inrush
(A)

AC A100 50 80 – 110 0.36 0.16 —
60 100 0.34 0.11 15
★2 A200 50 0.18 0.08
D12 60 90 – 120 0.17 0.05
DC D24 160 – 220
— 200 1.2
180 – 240 —
12 10.8 – 13.2
24 21.6 – 26.4 0.6

★1 Inrush current in the above table shows rms values at maximum stroke.
★2

336 DSG-005 Series Solenoid Operated Directional Valves

DIRECTIONAL CONTROLS

■ Model Number Designation

F- DSG -005 -3 C 2 -D24 -N -40

Special Seals Series Number Valve Size Number of Spool-Spring Spool Type Coil Type Electrical Conduit Design Design
Valve Position Arrangement Connection Number Standard

F: C: None: Flying Lead

Special Seals for 3 2, 3 AC Wire Type
Phosphate Ester DSG:
Spring Centred 40 A100, A200 N: Plug-in ★

Type Fluids Solenoid Operated 005 DC Connector Type 40 Refer to

(Omit if not Directional Valve 2 B: D12, D24 N1: Plug-in
Spring Offset 2, 3 Connector with
required)
Indicator Light

★ Design Standards: None .......... Japanese Standard “JIS” and European Design Standard
90 ............... N. American Design Standard

■ Sub-plates

Japanese Standard “JIS” European Design Standard N. American Design Standard Approx. E
Mass
Piping Sub-plate Thread Sub-plate Thread Sub-plate Thread
Size Model Numbers Size Model Numbers Size Model Numbers Size kg (lbs.)

1/8 DSGM-005X-20 Rc 1/8 DSGM-005X-2080 1/8 BSP.F DSGM-005X-2090 1/8 NPT 0.8 (1.8)
1/4 DSGM-005Y-20 Rc 1/4 DSGM-005Y-2080 1/4 BSP.F DSGM-005Y-2090 1/4 NPT 0.8 (1.8)

Sub-plates are available. Specify the sub-plate model number from the table above. When sub-plates are not used, the mounting surface should DSG-005 Series Solenoid
have a good machined finish. Operated Directional Valves

■ Mounting Bolts
Four socket head cap screws in the table below are included.

Descriptions Soc. Hd. Cap Screw (4 Pcs.) Tightening Torque
M4 × 35 Lg. 2.5 - 3.5 Nm (22.1 - 31.0 in. lbs.)
Japanese Standard “JIS”
European Design Standard No. 8-32 UNC × 1-3/8 Lg.
N. American Design Standard

■ Typical Changeover Time (Example)
Changeover time varies according to oil viscosity, spool type and hydraulic circuit.

Solenoid OFF ON OFF [Test Conditions]
Spool Shift 0 0 Pressure: 16 MPa (2320 PSI)
Max. Flow Rate: 7.5 L/min (1.98 U.S.GPM)
T1 T2 Viscosity: 30 mm2/s (141 SSU)
Voltage: Rated Voltage (After coil temperature rises and saturated)

AB T
Direction of Flow: P B A

[Result of Measurement] Time ms
T1 T2
Model Numbers 16 60
23 40
DSG-005-3C2-A 14 45
DSG-005-3C2-D 15 33
DSG-005-2B2-A
DSG-005-2B2-D

DSG-005 Series Solenoid Operated Directional Valves 337

■ List of Standard Models and The Maximum Flow

● Models with AC Solenoids : DSG-005- -A -40/4090

No. of Valve Model Graphic P AB T Max. Flow L/min P B [ Port "A" Blocked]
Position Numbers Symbols BA P A [ Port "B" Blocked]

Spool-Spring Working Pressure MPa Working Pressure MPa Working Pressure MPa
Arrangement

5 10 16 25 5 10 16 25 5 10 16 25

A B 15(14) 15(7) 12(3) 4(0.5) 15(14) 15(7) 12(3) 4(0.5)
Three Positions DSG-005-3C2 a 15 15 15 15
Spring Centred b 15(12) 12(3) 5(1) 1(0.5) 15(12) 12(3) 5(1) 1(0.5)

PT

AB

DSG-005-3C3 a b 12 12 12 12 15 15 15 15 15 15 15 15

PT

A B 15(14) 15(6) 12(2) 4(0.5) 15(14) 15(6) 12(2) 4(0.5)
DSG-005-3C40 a 15 15 15 15
b 15(10) 12(5) 5(2) 1(0.5) 15(10) 12(5) 5(2) 1(0.5)

PT

Two DSG-005-2B2 A B 15(14) 15(10) 13(5) 6(0.5)
Positions b 14 14 14 14 2 1 1 1
Spring 15(14) 14(9) 8(4) 4(0.5)
Offset PT

DSG-005-2B3 AB b 13.5 13.5 13.5 13.5 3 3 3 3 15(14) 15(11) 15(9)
PT 15

15(14) 15(11) 15(9)

Notes: 1. The relation between the maximum flow in the table above and the frequency/voltage (within the serviceable voltage) is as shown below.

( Example ) 50 Hz, At rated voltage 50 Hz, At minimum serviceable voltage
(80% of rated voltage)
The maximum flow rate is constant 15 (14)
regardless of 50 Hz or 60 Hz and of 15 15 (14) 60 Hz, At minimum serviceable voltage
any voltage variants within the (90% of rated voltage)
serviceable voltage

60 Hz, At rated voltage

● Models with DC Solenoids : DSG-005- -D -40/4090

No. of Valve Model Graphic P AB T Max. Flow L/min P B [ Port "A" Blocked]
Position Numbers Symbols BA P A [ Port "B" Blocked]

Spool-Spring Working Pressure MPa Working Pressure MPa Working Pressure MPa
Arrangement

5 10 16 25 5 10 16 25 5 10 16 25
3
A B 15 8 5 3 15 8 5 2
Three Positions DSG-005-3C2 a 15 15 15 15
Spring Centred b 12 5 3 2 12 5 3 15

PT 5
3.5
AB
9
DSG-005-3C3 a b 15 15 15 15 15 15 15 15 15 15 15 5.5
13.5
PT 10.5

AB 13 8 5 13 8

DSG-005-3C40 a b 15 15 15 15 15 15 9 5.5
9 5.5 3.5
PT

Two DSG-005-2B2 A B 15 11
Positions b 14 14 14 14 8.5 4.5 6.5 6.5 15
Spring 11 7.5
Offset PT

AB

DSG-005-2B3 b 13.5 13.5 13.5 13.5 8 7 8 9 15 15 15

PT

Notes: 1. The relation between the maximum flow in the table above and the voltage (within the serviceable voltage) is as shown below.

( Example ) 15 13 At rated voltage
9 [after temperature rise and saturated]
The maximum flow rate is constant
regardless of any voltage variants At minimum serviceable voltage
within the serviceable voltage (90% of rated voltage)
[after temperature rise and saturated]

338 DSG-005 Series Solenoid Operated Directional Valves

DIRECTIONAL CONTROLS

■ List of Standard Models and The Maximum Flow

● Models with AC Solenoids : DSG-005- -A -40/4090

No. of Valve Model Graphic P AB T Max. Flow U.S.GPM P B [ Port "A" Blocked]
Position Numbers Symbols BA P A [ Port "B" Blocked]

Spool-Spring Working Pressure PSI Working Pressure PSI Working Pressure PSI
Arrangement

730 1450 2320 3630 730 1450 2320 3630 730 1450 2320 3630

DSG-005-3C2 a A B 4.0(3.7) 4.0(1.9) 3.2(.8) 1.1(.1) 4.0(3.7) 4.0(1.9) 3.2(.8) 1.1(.1)
Three Positions 4.0 4.0 4.0 4.0 4.0(3.2) 4.0(.8) 1.3(.3) .3(.1) 4.0(3.2) 3.2(.8) 1.3(.3) .3(.1)
Spring Centred b

PT

AB

DSG-005-3C3 a b 3.2 3.2 3.2 3.2 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0

PT

AB 4.0 4.0(3.7) 4.0(1.6) 3.2(.5) 1.1(.1) 4.0(3.7) 4.0(1.6) 3.2(.5) 1.1(.1)
4.0(2.6) 3.2(1.3) 1.3(.5) .3(.1) 4.0(2.6) 3.2(1.3) 1.3(.5) .3(.1)
DSG-005-3C40 a b 4.0 4.0 4.0

PT

Two DSG-005-2B2 A B 4.0(3.7) 4.0(2.6) 3.4(1.3) 1.6(.1)
Positions b 3.7 3.7 3.7 3.7 .3 .3
Spring PT .5 .3 4.0(3.7) 3.7(2.4) 2.1(1.1) 1.1(.1)
Offset
DSG-005-2B3 AB b 3.6 3.6 3.6 3.6 .8 .8 .8 .8 4.0 4.0(3.7) 4.0(2.9) 4.0(2.4) E
PT 4.0(3.7) 4.0(2.9) 4.0(2.4)

Notes: 1. The relation between the maximum flow in the table above and the frequency/voltage (within the serviceable voltage) is as shown below.

( Example ) 50 Hz, At rated voltage 50 Hz, At minimum serviceable voltage
(80% of rated voltage)
The maximum flow rate is constant 4.0(3.7) DSG-005 Series Solenoid
regardless of 50 Hz or 60 Hz and of 4.0 4.0(3.7) 60 Hz, At minimum serviceable voltage Operated Directional Valves
any voltage variants within the (90% of rated voltage)
serviceable voltage

60 Hz, At rated voltage

● Models with DC Solenoids : DSG-005- -D -40/4090

No. of Valve Model Graphic P AB T Max. Flow U.S.GPM P B [ Port "A" Blocked]
Position Numbers Symbols BA P A [ Port "B" Blocked]

Spool-Spring Working Pressure PSI Working Pressure PSI Working Pressure PSI
Arrangement

730 1450 2320 3630 730 1450 2320 3630 730 1450 2320 3630
.8
AB 4.0 2.1 1.3 .8 4.0 2.1 1.3 .5
3.2 1.3 .8 .5
Three Positions DSG-005-3C2 a b 4.0 4.0 4.0 4.0 3.2 1.3 .8 4.0
Spring Centred
PT 1.3
.9
AB 2.4
1.5
DSG-005-3C3 a b 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 3.6
2.8
PT

AB 3.4 2.1 1.3 3.4 2.1

DSG-005-3C40 a b 4.0 4.0 4.0 4.0 4.0 2.4 1.5 .9 4.0
2.4 1.5
PT

Two DSG-005-2B2 AB b 3.7 3.7 3.7 3.7 2.3 1.2 1.7 1.7 4.0 2.9
Positions PT 4.0 2.9 2.0
Spring
Offset AB

DSG-005-2B3 b 3.6 3.6 3.6 3.6 2.1 1.9 2.1 2.4 4.0 4.0 4.0

PT

Notes: 1. The relation between the maximum flow in the table above and the voltage (within the serviceable voltage) is as shown below.

( Example ) 3.4 At rated voltage
4.0 [after temperature rise and saturated]
The maximum flow rate is constant
regardless of any voltage variants 2.4 At minimum serviceable voltage
within the serviceable voltage (90% of rated voltage)
[after temperature rise and saturated]

DSG-005 Series Solenoid Operated Directional Valves 339

■ Pressure Drop
Pressure drop curves based on viscosity of 30 mm2/s (141 SSU) and specific gravity of 0.850.

Pressure Drop ∆P PSI MPa 1 Model Numbers P→A Pressure Drop Curve Numbers P→T
300 2.0 2 4 B→T P→B A→T —
3 DSG-005-3C2 5 3
250 4 DSG-005-3C3 4 444 —
1.6 DSG-005-3C40 1 555 —
5 DSG-005-2B2 2 444 —
200 DSG-005-2B3 144
1.2 244

150 24 6 8 10 12 14 15 L/min
0.8 1
23 4 U.S.GPM
100 Flow Rate

50 0.4

0
0

0

● For any other viscosity, multiply the factors in the tabele below.

mm2/s 15 20 30 40 50 60 70 80 90 100
Viscosity

SSU 77 98 141 186 232 278 324 371 417 464

Factor 0.84 0.91 1.00 1.07 1.14 1.19 1.24 1.28 1.32 1.35

● For any other specific gravity (G’), the pressure drop (∆P) may be obtained from the formula below.
∆P’ = ∆P (G’/0.850)

340 DSG-005 Series Solenoid Operated Directional Valves

DIRECTIONAL CONTROLS

■ Flying Lead Wire Type

● Spring Centred: DSG-005-3C - A -40/4090 ● Spring Offset: A
D D
DSG-005-2B - -40/4090
Space Needed to Remove
132 (5.20) Solenoid-Each End.

28 52 32 (1.26)
(1.10)
4.5(.18) Dia Through (2.05)
8(.31) Dia Spotface Pressure Port "P" 25(.98) 4
33
4 Places SOL b
(1.30)
93
Cylinder Port "B" 8 Cylinder Port "A" (3.66)
44 (.31) ● For other dimensions, refer
(1.73) Tank Port "T" to “Spring Centred” type.

Lead Wire Manual Actuator
4.8(.19) Dia.
Approx. E
270(10.63)
3 16(.63)
SOL a SOL b (.12) 29(1.14) 17
(.67)
Mounting Surface 2(.08) Dia. 34
(O-Rings Furnished) Location Pin (1.34)

DIMENSIONS IN DSG-005 Series Solenoid
MILLIMETRES (INCHES) Operated Directional Valves

■ DIN Connector Type / DIN Connector with Indicator Light

● Spring Centred: DSG-005-3C - A -N/N1-40/4090
D

● Spring Offset: DSG-005-2B -DA -N/N1-40/4090 The position of the Plug-in connector can be
changed as illustrated below by loosening the
46 18 30.1 Cable Departure 15.8 lock nut. After completion of the change, be
(1.81) (.71) (1.19) (.62) sure to tighten the lock nut with the torque as
Cable Applicable: specified below.
Outside Dia. .... 3.5-6 mm (.14 - .24in.)
Conductor Area ....
Not Exceeding .75mm2 (.0012 sq. in.)

SOL a SOL b 46(1.81)
65.1(2.56)
73
(2.87)

Single Solenoid Models Only Lock Nut
Tightening Torque:
2.9 - 3.9 Nm (25.67 - 34.52 in. lbs)

● For other dimensions, refer to “Flying Lead Wire Type”.

DSG-005 Series Solenoid Operated Directional Valves 341

■ Sub-plates: DSGM-005 -20/2080/2090 DIMENSIONS IN
MILLIMETRES (INCHES)

7(.28) Dia. Through 28 21.5 32 58.5 "C" Thd.
11(.43) Dia. Spotface (1.26) (2.30) 4 Places
(1.10) (.85) 35.5
2 Places 20.75 16(.63) (1.40) B

(.82) 2.7(.11) Dia. 15 12.5
14 4(.16) Deep (.59) (.49)

(.55) 7.25

(.29)
63 (2.48)
48 (1.89) 7.5 P
25(.98)11.5 (.30) A

21.5 (.45) T
(.85) 12.5(.49)

3.5(.14)
11

24 (.43)
37 (.94)
(1.46)

"D" Thd. 7.5(.30) Deep 71 7
4 Places (.28)
(2.80)
85 4.3(.17) Dia.
4 Places
(3.35)

Sub-plate Piping Size "D" Thd.
Model Numbers "C" Thd.
M4
DSGM-005X-20 Rc 1/8 No. 8-32 UNC
DSGM-005X-2080 1/8 BSP. F
DSGM-005X-2090 1/8 NPT M4
DSGM-005Y-20 No. 8-32 UNC
DSGM-005Y-2080 Rc 1/4
DSGM-005Y-2090 1/4 BSP. F
1/4 NPT

342 DSG-005 Series Solenoid Operated Directional Valves

DIRECTIONAL CONTROLS

■ List of Seals, Solenoid Ass'y, Coil and Connector Ass'y

DSG-005- - -40/4090 13 7 8

SOL a SOL b

4 10 5 2

5 3 11 2 1 12 21 23 22 20 24 25 E
30 9 31

List of Seals DSG-005 Series Solenoid
Operated Directional Valves
Item Name of Parts Part Numbers Qty. Remarks
3C 2B Included in Solenoid Ass’y
10 O-Ring SO-NB-P14 —1
11 O-Ring SO-NB-P6
21 O-Ring SO-NB-P14 44
21

Note: When ordering seals, please specify the seal kit number “KS-DSG-005-40”.

■ Solenoid Ass’y, Coil and Connector Ass’y No.

Valve Model Number 9 Solenoid Ass’y No. @2 Coil No. #0 Connector No. #1 Connector No. Remarks
Ass’y Part Ass’y Part
SA05-100-40 C-SA05-100-40
DSG-005- -A100 SA05-200-40 C-SA05-200-40 Flying Lead Wire Type
DSG-005- -A200 SD05-12-40 C-SD05-12-40
DSG-005- -D12 SD-05-24-40 C-SD-05-24-40 TK290058-7 TK290058-7 Plug-in Connector Type
DSG-005- -D24 SA05-100-N-40 C-SA05-100-N-40
DSG-005- -A100-N SA05-200-N-40 C-SA05-200-N-40 TK290378-9 TK290378-9 Plug-in Connector
DSG-005- -A200-N SD05-12-N-40 C-SD05-12-N-40 TK290379-7 TK290379-7 with
DSG-005- -D12-N SD-05-24-N-40 C-SD-05-24-N-40 TK290089-2 TK290089-2
DSG-005- -D24-N SA05-100-N-40 C-SA05-100-N-40 TK290090-0 TK290090-0 Indicator Light
DSG-005- -A100-N1 SA05-200-N-40 C-SA05-200-N-40
DSG-005- -A200-N1 SD05-12-N-40 C-SD05-12-N-40
DSG-005- -D12-N1 SD-05-24-N-40 C-SD-05-24-N-40
DSG-005- -D24-N1

DSG-005 Series Solenoid Operated Directional Valves 343

■ 1/8 Solenoid Operated Directional Valves, DSG-01 Series

These are Solenoid Operated Directional Valves of high pressure, high
flow and low pressure drop, the features of which can be materialized
by employing a powerful wet type solenoid and the rational flow
channel design.

● High Pressure & High Flow Rate Terminal Box Type
In comparison to our existing lines, both the pressure and flow of

these valves are much increased.
● Max. Operating Pressure: approx. 10 % increased [31.5→35 MPa

(4570 →5080 PSI)]
● Max. T-Line Back Pressure: approx. 30 % increased [16→21 MPa

(2320 →3050 PSI)]
● Max. Flow Rate: approx. 60 % increased [63→100 L/min (16.64

→26.42 U.S.GPM)]

● Low Pressure Drop
The pressure drop of these valves is reduced by 10 % from 1.0 to 0.9
MPa (145 to 131 PSI), in comparison to our existing lines*; the valves
effectively reduce the energy consumption of the unit.
{* At Flow Rate: 60 L/min (15.9 U.S.GPM), Spool Type: 3C2 (P→A)}

● Compact & Small Mass Plug-in Connector Type
Despite of high pressure, high flow and low pressure drop, these valve
bodies are compact and lightweight with DC double solenoids; the
overall length and mass are reduced from 210 to 205 mm (8.26 to 8.07
inch) and from 2.2 to 1.85 kg (4.85 to 4.08 lbs), respectively.

● Shockless type available
In addition to the standard valves for high pressure and high flow, a
shockless type capable of minimizing noise and vibration in piping
during spool changeover is also available.

● Stable Operation
Due to the powerful magnetic and spring force of the solenoids, these
valves exhibit a high tolerance to contaminants and especially stable
operation.

● IP65-equivalent high dust- and water-proof
These valves demonstrate excellent dust- and water-proof
characteristics, in compliance with I. E. C. Pub. 529. IP65 and JIS C
0920 IP65 (dust- and jet-proof type).

● Usable in products of various standards
These standard valves are CE certified for installation in equipment overseas.
UL/CSA certified products are also available.

■ Specifications

Valve Type Model Numbers Max. Flow★2 Max. Operating Max. T-Line Max. Changeover Mass
L/min Pressure Back Pressure Frequency kg
MPa (PSI)
(U.S.GPM) MPa (PSI) Cycle/min {min–1} (lbs.)
35
Standard Type DSG-01-3C - -70/7090 100 (5080) 21 300 1.85
Shockless Type DSG-01-2D2- -70/7090 (26.4) (3050) R Type Sol. Only (4.08)
DSG-01-2B - -70/7090 25 1.4(3.09)
S-DSG-01-3C - -70/7090 63 (3630) 21 120 1.85(4.08)
S-DSG-01-2B2- -70/7090 (16.6) (3050) 1.4(3.09)
L-DSG-01-3C - -70/7090 16 120
(2320) 16 1.85
Low Wattage(14W) L-DSG-01-2D2- -70/7090 40 (2320) 300 (4.08)
(10.6) R Type Sol. Only
Type ★1 L-DSG-01-2N - -70/7090 1.4(3.09)
120

L-DSG-01-2B - -70/7090

★ 1. For details of L-DSG-01, please contact us.
★ 2. Maximum flow indicates a ceiling flow depends on the type of spool and operating condition, refer to the List of Spool Functions on pages 347

to 351 for details.

344 DSG-01 Series Solenoid Operated Directional Valves

DIRECTIONAL CONTROLS

Sub-plate

Piping Japanese Standard "JIS " European Design Standard N.American Design Standard Approx.
Size Mass
Sub-plat e Thread Sub-plat e Thread Sub-plat e Thread
1/8 Model Numbers Size Model Numbers Size Model Numbers Size kg (lbs.)
1/4
DSGM-01-31 Rc 1/8 DSGM-01-3180 1/8 BSP. F DSGM-01-3190 1/8 NPT 0.8 (1.8 )

DSGM-01X-31 Rc 1/4 DSGM-01X-3180 1/4 BSP. F DSGM-01X-3190 1/4 NPT 0.8 (1.8 )

3/8 DSGM-01Y-31 Rc 3/8 DSGM-01Y-3190 3/8 NPT 0.8 (1.8 )

Sub-plates are available. Specify the sub-plate model number from the table above.
When sub-plates are not used, the mounting surface should have a good machined finish.

Mounting Bolt

For socket head cap screws in the table below are included.

Descriptions Soc. Hd. Cap Screw (4 pcs.) Tightening Torque E
M5 × 45 Lg.
Japanese Standard "JIS" 5 - 7 Nm (43 - 60 in. 1bs.)
European Design Standard No. 10-24 UNC × 1-3/4 Lg . Applicable to working pressure more than
25 MPa (3630 PSI): 6 - 7 Nm (52 - 60 in. 1bs.)
N. American Design Standard

Solenoid Ratings

Valve Type Electric source Coil Frequenc y Voltage (V) Current & Power at Rated Voltage
Type (Hz) Source Ratin g Serviceable Range Inrush (A) 2 Holding (A) Power (W)
Standard 1 50 DSG-01 Series Solenoid
Type A100 60 100 80 - 110 2.42 0.51 Operated Directional Valves
AC 50 100 2.14 0.37
A120 60 2.35 0.44
Shockles s 50 90 - 120 2.02 0.42
Type A200 60 110 1.78 0.31
50 1.21 0.25
DC (K Series ) A240 60 96 - 132 1.07 0.19
D12 120 1.18 0.22
AC → DC Rectified (R ) D24 50/60 1.01 0.21
D48 108 - 144 0.89 0.15
R100 200 160 - 220
R200 200 2.45
1.23 29
180 - 240 0.61
220 0.33

192 - 264 29
240 0.16

216 - 288
12 10.8 - 13.2
24 21.6 - 26.4
48 43.2 - 52.8
100 90 - 110
200 180 - 220

1. AC solenoid is not available in shockless type.
R type models with built-in current rectifier is recommended for shockless operation with AC power.

2. Inrush current in the above table show rms values at maximum stroke.
3. There are more coil types other than the above. For details, please make inquiries.

The coil type numbers in the shaded column are handled as opotinal extras.
In case these coils are required to be chosen, please confirm the time of
delivery with us before ordering.

■ Options SOL b Lock Nut
Push Button
● Push Button with Lock Nut
Can be used for manual changeover of spool. The push button
can be locked in the pressed condition.

● Plug-in Connector with Solenoid Indicator Light Plug-in Connector
These are the indicator light incorporated plug-in connector With Indicator Light
type solenoids. Energisation or de-energisation of the solenoid
can be easily identified with the incorporated indicator light. SOL b

DSG-01 Series Solenoid Operated Directional Valves 345

■ Model Number Designation

F- S- DS G - 01 -2 B 2 A -D24 -C -N -70 -L

Special Shockless Series Special Two Design Models with
Seals Type Number Number Reverse Mtg. of
Valve Number Spool- Spool Position Valve Coil Manual Electrical Design
Size of Valve Spring Type Omit if not Type Override Conduit Standard Solenoid
Positions Arrangement Connection
Omit if not
required required

3: C: 2, 3 AC: None:
4, 40 Japanese
Three Spring 60, 9 A100 Std. "JIS"
Positions Centred 10, 11
12 A120 90 :
A200 None: None: N.American
Manual Terminal Design Std.
A240 Override Box Type
70
Pin None:
Japanese
None: D: 2 DC: Std. "JIS"
D12 and
Standard No-Spring 2 D24 European
Type Detented 3 D48 Design
8 Std.
F: DSG: 2: R: C: N:
(AC→ 90 :
For Phosphate Solenoid 01 Two Push Plug-in N. American
Ester Type Operated Positions DC) Button Connector Design
Fluids Directional R100 and Type Std.
(Omit if not Valve R200 Lock Nut
required (Option) 2
DC:
B: A1 D12 N1 : L
B1 D24 L
Spring D48 Plug-in
Offset Connector
R: Type
S: 3: C: 2 (AC→ with
4 Indicator
Shockless Three Spring DC) Light
Type Positions Centred 2 R100 (Option)
R200
2: B:

Two Spring
Positions Offset

★1. In case of the special two position valve, please refer to page 352 for details.
★2. N1 is not available for R type solenoids.

In the table above, the symbols or numbers highlighted with shade represent the optional
extras. The valves with model number having such optional extras are handles as options,
therefore, please confirm the time of delivery with us before ordering.

346 DSG-01 Series Solenoid Operated Directional Valves

DIRECTIONAL CONTROLS

■ List of Standard Models and The Maximum Flow
● Models with AC Solenoids: DSG-01- -A

Max. Flow L /min

No. of Valve Positions [Port "B" Blocked] [Port "A" Blocked]
Spool-Spring Arrangement
Model Graphic AB AB AB
Numbers Symbols PT PT PT

Working Pressure MPa Working Pressure MPa Working Pressure MPa

10 16 25 31. 5 35 10 16 25 31. 5 35 10 16 25 31. 5 35

DSG 01 3C2 a A B 100 43 100 41 80 21 60 17 38 15 100 43 100 41 80 21 60 17 38 15
b 100 100 100 100 100
P T 57 38 53 31 29 17 19 10 13 9 57 38 53 31 29 17 19 10 13 9

DSG 01 3C3 a A B 100 80 100 80 100 80 100 77 100 77 70 46 70 46 70 46 70 46 70 46 70 46 70 46 70 46 70 46 70 46 E
b

P T 90 63 90 63 90 63 90 63 90 63 45 30 45 30 45 30 45 30 45 30 45 30 45 30 45 30 45 30 45 30

AB 90 90 22 35 18 100 38 76 28 67 15 57 10 35 7 100 38 76 28 67 15 57 10 35 7
90
DSG 01 3C4 a b 90
90 26 43 14 30 11 50 31 38 20 20 10 16 7 12 5 50 31 38 20 20 10 16 7 12 5
PT

Three Positions DSG 01 3C40 a A B 85 85 85 80 40 80 22 85 40 85 35 85 24 60 16 55 12 85 40 85 35 85 24 60 16 55 12
Spring Centred b 80 80 30 63 15 25 10 70 26 50 24 32 16 22 13 18 10 70 26 50 24 32 16 22 13 18 10

P T 80

A B 43 23 43 23 42 23 42 23 42 23 54 32 54 32 52 32 52 32 52 32 54 32 54 32 52 32 52 32 52 32
DSG 01 3C60 a b

P T 40 23 40 23 38 23 36 23 35 23 48 30 47 30 47 30 47 30 47 30 48 30 47 30 47 30 47 30 47 30

AB DSG-01 Series Solenoid
Operated Directional Valves
DSG 01 3C9 a b 100 100 100 100 100 20 15 10 10 8 20 15 10 10 8

PT

DSG 01 3C10 a A B 100 100 63 100 33 100 27 100 50 100 37 100 20 78 16 62 13 100 50 100 37 100 20 78 16 62 13
b 100
P T 100 70 80 20 70 20 40 19 100 37 55 25 29 14 20 11 15 10 100 37 55 25 29 14 20 11 15 10

DSG 01 3C11 a A B 100 65 85 52 72 45 65 34 60 27
b 100 100 100 100 100 23 20 13 10 5
P T 70 50 57 40 50 25 43 19 35 18

DSG 01 3C12 a A B 100 100 63 100 33 100 27 100 50 100 37 100 20 78 16 62 13 100 50 100 37 100 20 78 16 62 13
b 100
P T 100 70 80 20 70 20 40 19 100 37 55 25 29 14 20 11 15 10 100 37 55 25 29 14 20 11 15 10

No-Spring 45 21 45 16 38 13 50 45 50 42 45 40 45 40
Detented
AB b 80 80 80 80 80 45 45 50

DSG 01 2D2 a

PT

Two Positions 36 18 28 13 22 12 50 45 50 42 45 40 45 40

AB 85 63 80 50 63 40 44 32 44 32
DSG 01 2B2 b 85 85 85 85 85 20 16 16 15 13
Spring Offset DSG 01 2B3 PT 85 30 60 33 50 28 40 28 40 28
DSG 01 2B8 AB
80 70 80 70 80 70 80 70 80 70
PT b 70 70 70 70 70 50 50 50 50 50
AB 70 48 70 48 70 48 70 48 70 48

PT 80 50 70 40 60 20 45 10 30 10
26 17 13 11 10
b 35 20 23 15 15 8 10 5 7 5

Notes: 1. The relation between the maximum flow in the table above and the frequency/voltage (within the serviceable voltage) is as shown below.

( Example ) 50 Hz, At rated voltage 50 Hz, At minimum serviceable voltage
(80% of rated voltage)
The maximum flow rate is constant 100 (43)
regardless of 50 Hz or 60 Hz and of 100 57 (38) 60 Hz, At minimum serviceable voltage
any voltage variants within the (90% of rated voltage)
serviceable voltage

60 Hz, At rated voltage

2. For the maximum flow rate in P → T of the valves with a mark, please see page 351.

The valve models with a mark are handled as
Options. If you choose such valves, check the time
of delivery beforehand.

DSG-01 Series Solenoid Operated Directional Valves 347

■ List of Standard Models and The Maximum Flow
● Models with DC or R Type Solenoids: DSG-01- -D /R

Max. Flow L /mi

No. of Valve Positions [Port "B" Blocked] [Port "A" Blocked]
Spool-Spring Arrangement
Model Graphic AB AB AB
Numbers Symbols PT PT PT

Working Pressure MPa Working Pressure MPa Working Pressure MPa

10 16 25 31. 5 35 10 16 25 31. 5 35 10 16 25 31. 5 35

DSG 01 3C2 a A B 100 45 28 25 22 100 45 28 25 22
b 100 100 100 100 100
P T 55 35 23 19 17 55 35 23 19 17

DSG 01 3C3 a A B 100 100 100 100 100 78 78 78 78 75 78 78 78 78 75
b

P T 80 80 80 80 80 70 70 70 70 70 70 70 70 70 70

DSG 01 3C4 a A B 90 50 38 100 58 38 31 29 100 58 38 31 29
b 90 90
P T 42 26 20 62 48 30 25 23 62 48 30 25 23

Three Positions DSG 01 3C40 a A B 65 40 33 85 52 30 26 24 85 52 30 26 24
Spring Centred b 85 85
P T 45 30 26 65 36 25 21 19 65 36 25 21 19

A B 50 50 50 50 50 66 66 66 66 66 66 66 66 66 66
DSG 01 3C60 a b

P T 41 41 41 41 41 58 58 58 58 58 58 58 58 58 58

AB

DSG 01 3C9 a b 100 100 100 100 100 20 15 10 10 8 20 15 10 10 8

PT

DSG 01 3C10 a A B 85 80 40 100 56 36 28 24 100 56 36 28 24
b 85 85
P T 35 23 20 74 43 28 20 19 74 43 28 20 19

DSG 01 3C11 a A B 100 60 40 36 32
b 100 100 100 100 100 23 20 13 10 5
P T 85 46 32 28 24

DSG 01 3C12 a A B 85 80 40 100 56 36 28 24 100 56 36 28 24
b 85 85
P T 35 23 20 74 43 28 20 19 74 43 28 20 19

No-Spring 75 75 75 75 75 40 30 27 50 50 45 45
Detented
AB b 45 45 50

Two Positions DSG 01 2D2 a

PT

70 70 70 70 70 30 25 22 45 42 40 40

Spring Offset DSG 01 2B2 AB 46 31 24 22 22
DSG 01 2B3 b 80 80 80 80 80 20 16 16 15 13 32 23 19 18 18
DSG 01 2B8 PT
AB 75 75 75 75 75
b 70 70 70 70 70 50 50 50 50 50 65 65 65 65 65
PT
AB 53 35 23 19 17
b 26 17 13 11 10 35 30 17 13 12
PT

Notes: 1. The relation between the maximum flow in the table above and the voltage (within the serviceable voltage) is as shown be low.

( Example ) 100 At rated voltage
100 [after temperature rise and saturated]
The maximum flow rate is constant
regardless of any voltage variants 55 At minimum serviceable voltage
within the serviceable voltage (90% of rated voltage)
[after temperature rise and saturated]

2. For the maximum flow rate in P → T of the valves with a mark, please see page 351.

The valve models with a mark are handled as
Options. If you choose suce valves, check the time
of delivery beforehand.

348 DSG-01 Series Solenoid Operated Directional Valves

DIRECTIONAL CONTROLS

■ List of Standard Models and The Maximum Flow
● Models with AC Solenoids: DSG-01- -A

Max. Flow U.S.GPM

No. of Valve Positions [Port "B" Blocked] [Port "A" Blocked]
Spool-Spring Arrangement
Model Graphic AB AB AB
Numbers Symbols PT PT PT

Working Pressure PSI Working Pressure PSI Working Pressure PSI

1450 2320 3630 4570 5080 1450 2320 3630 4570 5080 1450 2320 3630 4570 5080

DSG 01 3C2 a AB 26.4(11.4) 26.4(10.8) 21.1(5.6) 15.9(4.5) 10.0(4.0) 26.4(11.4) 26.4(10.8) 21.1(5.6) 15.9(4.5) 10.0(4.0)
PT b 26.4 26.4 26.4 26.4 26.4 15.1(10.0) 14.0(8.2) 7.7(4.5) 5.0(2.6) 3.4(2.4) 15.1(10.0) 14.0(8.2) 7.7(4.5) 5.0(2.6) 3.4(2.4)

DSG 01 3C3 a A B 26.4(21.1) 26.4(21.1) 26.4(21.1) 26.4(21.1) 26.4(21.1) 18.5(12.2) 18.5(12.2) 18.5(12.2) 18.5(12.2) 18.5(12.2) 18.5(12.2) 18.5(12.2) 18.5(12.2) 18.5(12.2) 18.5(12.2) E
b

P T 23.8(16.6) 23.8(16.6) 23.8(16.6) 23.8(16.6) 23.8(16.6) 11.9(7.9) 11.9(7.9) 11.9(7.9) 11.9(7.9) 11.9(7.9) 11.9(7.9) 11.9(7.9) 11.9(7.9) 11.9(7.9) 11.9(7.9)

DSG 01 3C4 a A B b 23.8 23.8 23.8 23.8(5.8) 9.2(4.8) 26.4(10.0) 20.1(17.4) 17.7(4.0) 15.1(2.6) 9.2(1.8) 26.4(10.0) 20.1(7.4) 17.7(4.0) 15.1(2.6) 9.2(1.8)
P T 23.8(6.9) 11.4(3.7) 7.9(2.9) 13.2(8.2) 10.0(5.3) 5.3(2.6) 4.2(1.9) 3.2(1.3) 13.2(8.2) 10.0(5.3) 5.3(2.6) 4.2(1.9) 3.2(1.3)

Three Positions DSG 01 3C40 a A B b 22.5 22.5 22.5 21.1(10.6) 21.1(5.8) 22.5(10.6) 22.5(9.3) 22.5(6.3) 15.9(4.2) 14.5(3.2) 22.5(10.6) 22.5(9.3) 22.5(6.3) 15.9(4.2) 14.5(3.2)
Spring Centred P T 21.1 21.1 21.1(7.9) 16.6(4.0) 6.6(2.4) 18.5(6.9) 13.2(6.3) 8.5(4.2) 5.8(3.4) 4.8(2.6) 18.5(6.9) 13.2(6.3) 8.5(4.2) 5.8(3.4) 4.8(2.6)

DSG 01 3C60 a A B b 11.4(6.1) 11.4(6.1) 11.1(6.1) 11.1(6.1) 11.1(6.1) 14.2(8.4) 14.2(8.4) 13.7(8.4) 13.7(8.4) 13.7(8.4) 14.2(8.4) 14.2(8.4) 13.7(8.4) 13.7(8.4) 13.7(8.4)
P T 10.6(6.1) 10.6(6.1) 10.0(6.1) 9.5(6.1) 9.2(6.1) 12.7(7.9) 12.4(7.9) 12.4(7.9) 12.4(7.9) 12.4(7.9) 12.7(7.9) 12.4(7.9) 12.4(7.9) 12.4(7.9) 12.4(7.9)

AB DSG-01 Series Solenoid
Operated Directional Valves
DSG 01 3C9 a b 26.4 26.4 26.4 26.4 26.4 5.3 4.0 2.6 2.6 2.1 5.3 4.0 2.6 2.6 2.1

PT

DSG 01 3C10 a A B b 26.4 26.4 26.4(16.6) 26.4(8.7) 26.4(7.1) 26.4(13.2) 26.4(9.8) 26.4(5.3) 20.6(4.2) 16.4(3.4) 26.4(13.2) 26.4(9.8) 26.4(5.3) 20.6(4.2) 16.4(3.4)
P T 26.4(18.5) 21.1(5.3) 18.5(5.3) 10.6(5.0) 26.4(9.8) 14.5(6.6) 7.7(3.7) 5.3(2.9) 4.0(2.6) 26.4(9.8) 14.5(6.6) 7.7(3.7) 5.3(2.9) 4.0(2.6)

DSG 01 3C11 a A B 26.4(17.2) 22.5(13.7) 19.0(13.7) 17.2(9.0) 15.9(7.1)
b 26.4 26.4 26.4 26.4 26.4 6.1 5.3 3.4 2.6 1.3
P T 18.5(13.2) 15.1(10.6) 13.2(6.6) 11.4(5.0) 9.2(4.8)

DSG 01 3C12 a A B b 26.4 26.4 26.4(16.6) 26.4(8.7) 26.4(7.1) 26.4(13.2) 26.4(9.8) 26.4(5.3) 20.6(4.2) 16.4(3.4) 26.4(13.2) 26.4(9.8) 26.4(5.3) 20.6(4.2) 16.4(3.4)
P T 26.4(18.5) 21.1(5.3) 18.5(5.3) 10.6(5.0) 26.4(9.8) 14.5(6.6) 7.7(3.7) 5.3(2.9) 4.0(2.6) 26.4(9.8) 14.5(6.6) 7.7(3.7) 5.3(2.9) 4.0(2.6)

No-Spring 11.9(5.6) 11.9(4.2) 10.0(3.4) 13.2(11.9) 13.2(11.1) 11.9(10.6) 11.9(10.6)
Detented
AB b 21.1 21.1 21.1 21.1 21.1 11.9 11.9 13.2

DSG 01 2D2 a

PT

Two Positions 9.5(4.8) 7.4(3.4) 5.8(3.2) 13.2(11.9) 13.2(11.1) 11.9(10.6) 11.9(10.6)

DSG 01 2B2 AB b 22.5 22.5 22.5 22.5 22.5 5.3 4.2 4.0 22.5(16.6) 21.1(13.2) 16.6(10.6) 11.6(8.5) 11.6(8.5)
DSG 01 2B3 4.2 3.4
Spring Offset DSG 01 2B8 PT 22.5(7.9) 15.9(8.7) 13.2(7.4) 10.6(7.4) 10.6(7.4)
AB
13.2 13.2 13.2 21.1(18.5) 21.1(18.5) 21.1(18.5) 21.1(18.5) 21.1(18.5)
PT 18.5 18.5 18.5 18.5 18.5 13.2 13.2
AB b 18.5(12.7) 18.5(12.7) 18.5(12.7) 18.5(12.7) 18.5(12.7)

PT 21.1(13.2) 18.5(10.6) 15.9(5.3) 11.9(2.6) 7.9(2.6)
6.9 4.5 3.4 2.9 2.6
b 9.2(5.3) 6.1(4.0) 4.0(2.1) 2.6(1.3) 1.9(1.3)

Notes: 1. The relation between the maximum flow in the table above and the frequency/voltage (within the serviceable voltage) is as shown below.

( Example ) 50 Hz, At rated voltage 50 Hz, At minimum serviceable voltage
(80% of rated voltage)
The maximum flow rate is constant 26.4(11.4)
regardless of 50 Hz or 60 Hz and of 26.4 15.1(10.0) 60 Hz, At minimum serviceable voltage
any voltage variants within the (90% of rated voltage)
serviceable voltage

60 Hz, At rated voltage

2. For the maximum flow rate in P → T of the valves with a mark, please see page 351.

The valve models with a mark are handled as
Options. If you choose such valves, check the time
of delivery beforehand.

DSG-01 Series Solenoid Operated Directional Valves 349

■ List of Standard Models and The Maximum Flow
● Models with DC or R Type Solenoids: DSG-01- -D /R

Max. Flow U.S.GPM

No. of Valve Positions [Port "B" Blocked] [Port "A" Blocked]
Spool-Spring Arrangement
Model Graphic AB AB AB
Numbers Symbols PT PT PT

Working Pressure PSI Working Pressure PSI Working Pressure PSI

1450 2320 3630 4570 5080 1450 2320 3630 4570 5080 1450 2320 3630 4570 5080

DSG 01 3C2 a A B 26.4 11.9 7.4 6.6 5.8 26.4 11.9 7.4 6.6 5.8
b 26.4 26.4 26.4 26.4 26.4
P T 14.5 9.3 6.1 5.0 4.5 14.5 9.3 6.1 5.0 4.5

DSG 01 3C3 a A B 26.4 26.4 26.4 26.4 26.4 20.6 20.6 20.6 20.6 19.8 20.6 20.6 20.6 20.6 19.8
b

P T 21.1 21.1 21.1 21.1 21.1 18.5 18.5 18.5 18.5 18.5 18.5 18.5 18.5 18.5 18.5

DSG 01 3C4 a A B 23.8 13.2 10.0 26.4 15.3 10.0 8.2 7.7 26.4 15.3 10.0 8.2 7.7
b 23.8 23.8
P T 11.1 6.9 5.3 16.4 12.7 7.9 6.6 6.1 16.4 12.7 7.9 6.6 6.1

Three Positions DSG 01 3C40 a A B 17.2 10.6 8.7 22.5 13.7 7.9 6.9 6.3 22.5 13.7 7.9 6.9 6.3
Spring Centred b 22.5 22.5
P T 11.9 7.9 6.9 17.2 9.5 6.6 5.6 5.0 17.2 9.5 6.6 5.6 5.0

A B 13.3 13.3 13.3 13.3 13.3 17.4 17.4 17.4 17.4 17.4 17.4 17.4 17.4 17.4 17.4
DSG 01 3C60 a b

P T 10.8 10.8 10.8 10.8 10.8 15.3 15.3 15.3 15.3 15.3 15.3 15.3 15.3 15.3 15.3

AB

DSG 01 3C9 a b 26.4 26.4 26.4 26.4 26.4 5.3 4.0 2.6 2.6 2.1 5.3 4.0 2.6 2.6 2.1

PT

DSG 01 3C10 a A B 22.5 21.1 10.6 26.4 14.8 9.5 7.4 6.3 26.4 14.8 9.5 7.4 6.3
b 22.5 22.5
P T 9.2 6.1 5.3 19.6 11.4 7.4 5.3 5.0 19.6 11.4 7.4 5.3 5.0

DSG 01 3C11 a A B 26.4 15.9 10.6 9.5 8.5
b 26.4 26.4 26.4 26.4 26.4 6.1 5.3 3.4 2.6 1.3
P T 22.5 12.2 8.5 7.4 6.3

DSG 01 3C12 a A B 22.5 21.1 10.6 26.4 14.8 9.5 7.4 6.3 26.4 14.8 9.5 7.4 6.3
b 22.5 22.5
P T 9.2 6.1 5.3 19.6 11.4 7.4 5.3 5.0 19.6 11.4 7.4 5.3 5.0

No-Spring 19.8 19.8 19.8 19.8 19.8 10.6 7.9 7.1 13.2 13.2 11.9 11.9
Detented 13.2
AB b 11.9 11.9
5.8 13.2 11.1 10.6 10.6
Two Positions DSG 01 2D2 a

PT

18.5 18.5 18.5 18.5 18.5 7.9 6.6

Spring Offset DSG 01 2B2 AB 12.2 8.2 6.3 5.8 5.8
DSG 01 2B3 b 21.1 21.1 21.1 21.1 21.1 5.3 4.2 4.2 4.0 3.4 8.5 6.1 5.0 4.8 4.8
DSG 01 2B8 PT
AB 19.8 19.8 19.8 19.8 19.8
b 18.5 18.5 18.5 18.5 18.5 13.2 13.2 13.2 13.2 13.2 17.2 17.2 17.2 17.2 17.2
PT
AB 14.0 9.2 6.1 5.0 4.5
b 6.9 4.5 3.4 2.9 2.6 9.3 7.9 4.5 3.4 3.2
PT

Notes: 1. The relation between the maximum flow in the table above and the voltage (within the serviceable voltage) is as shown be low.

( Example ) 26.4 26.4 At rated voltage
14.5 [after temperature rise and saturated]
The maximum flow rate is constant
regardless of any voltage variants At minimum serviceable voltage
within the serviceable voltage (90% of rated voltage)
[after temperature rise and saturated]

2. For the maximum flow rate in P → T of the valves with a mark, please see page 351.

The valve models with a mark are handled as
Options. If you choose suce valves, check the time
of delivery beforehand.

350 DSG-01 Series Solenoid Operated Directional Valves

DIRECTIONAL CONTROLS

Maximum Flow of Centre By-Pass

In valve type 3C60, in case where the actuator is put on in between the cylinder ports A and B as illustrated below and
where the actuator moves and suspended at its stroke end and where the valve is then shifted to the neutral position in
the suspended state of the actuator, the maximum flow rates available are those as shown as the table below regardless
of any voltage in the range of serviceable valtage.

Graphic Max. Flow L/min (U.S.GPM)
Symbol
Mode Numbers 10 MPa 16 MPa 25 MPa 31.5 MPa 35 MPa
DSG-01-3C60-A /D /R AB (1450 PSI) (2320 PSI) (3630 PSI) (4570 PSI) (5080 PSI)
ab
55 44 30 26 22
PT
(14.5) (11.6) (7.9) (6.9) (5.8)

E

List of Shockless Models and The Maximum Flow
Models with DC or R Type Solenoids: S-DSG-01- -D /R

Max. Flow L/min (U.S.GPM)

[Port "B" Blocked] [Port "A" Blocked] DSG-01 Series Solenoid
Operated Directional Valves
No. of Spool-Spring Model Numbers Graphic AB AB AB
Valve Arrangement Symbol PT PT PT
Positions

Working Pressure Working Pressure Working Pressure
MPa (PSI) MPa (PSI) MPa (PSI)

10 16 25 10 16 25 10 16 25
(1450) (2320) (3630) (1450) (2320) (3630) (1450) (2320) (3630)

Three Spring S-DSG-01-3C2 AB b 63 63 40 40 32 25 40 32 25
Positions Centred S-DSG-01-3C4 a b (16.6) (16.6) (10.6) (10.6) (8.5) (6.6) (10.6) (8.5) (6.6)
S-DSG-01-3B2 b 20 16
PT 60 50 40 32 (5.3) (4.23) 32 20 16
(15.9) (13.2) (10.6) (8.5) 32 16 (8.5) (5.3) (4.23)
AB (8.5) (4.2) 40 32
a 50 40 20 40 (10.6) (8.5) 16
(13.2) (10.6) (5.3) (10.6) 16 12 (4.2)
PT 45 (4.23) (3.17) 32 16
45 45 (11.9) 32 (8.45) (4.23) 12
AB (11.9) (11.9) (8.45) (3.17)
40
Two Spring PT 40 (10.6) 30 30 30 60 40 40
Positions Offset (10.6) (7.9) (7.9) (7.9) (15.9) (10.6) (10.6)

Notes: 1. The relation between the maximum flow in the table above and the voltage (within the serviceable voltage) is as shown be low.

( Example ) L/min At rated voltage
[after temperature rise and saturated]
The maximum flow rate is constant 60 50
regardless of any voltage variants (15.9) (13.2) At minimum serviceable voltage
within the serviceable voltage (90% of rated voltage)
40 [after temperature rise and saturated]
(10.6)

U.S.GPM

DSG-01 Series Solenoid Operated Directional Valves 351

Reverse Mounting of Solenoid.

In spring offset type, it is a standard configuration that the solenoid is mounted onto the valve in the SOL b position
(side). However, in this particular spool-spring arrangement, the mounting of the solenoid onto the valve in the reverse
position -SOL a side- is also available. The graphic symbol for this reverse mounting is as shown below.
As for the valve type 2B A and 2B B, please refer to the explanation under the heading of "Valves Using Neutral
Position and Side Position" given below.

AB b SOL b AB
PT
a SOL a
PT

Standard Mtg. of Solenoid Reverse Mtg. of Solenoid

Valves Using Neutral Position and Side Position. (Special Two position Valve)

Besides the use of the standard 2-position valves aforementioned in the "List of Standard Models and Maximum Flow",
the 3-position valves also can be used as the 2-position valves using the two of their three positions. In this case, there
are two kinds of the valve available. One is the valve using the neutral position and SOL a position (2B A) and another
is the valve using the neutral position and SOL b position (2B B) .

(Example) In case of Spool Type "2"

Neutral Position

SOL. a Energised SOL. b Energised
Position Position

AB b
a

PT

2B2A 2B2B
AB AB

b b

PT PT

"A": Use of Neutral and "B": Use of Neutral and
SOL. a Energised SOL. b Energised
Position (2B2A) Position (2B2B)

Graphic SymbolsG raphic Symbols

Model Numbers Standard Reverse Model Numbers Standard Reverse
Mtg. Type Mtg. Type Mtg. Type Mtg. Type
DSG-01-2B A DSG-01-2B B
DSG-01-2B2A AB ba AB DSG-01-2B2B AB ba AB
PT PT DSG-01-2B3B PT PT
DSG-01-2B4B
DSG-01-2B60B
DSG-01-2B10B

In the abovetable, the graphic symbols in mounting
type highlighted with shade are optional extra,
therefore, please confirm the time of delivery with
us before ordering.

352 DSG-01 Series Solenoid Operated Directional Valves

DIRECTIONAL CONTROLS

Typical Changeover Time
Changeover time varies according to oil viscosity, spool type and hydraulic circuit.

Standard Type (Without Shockless Function) [Result of Measurement]

[Test Conditions ] Solenoid OF F ON O FF
Spool Shift 0 0
Pressure: 16 MPa (2320 PSI) Max.
Flow Rate: 31.5 L /min (8.3 U.S.GPM) T1 T2
Viscosity: 35 mm 2 /s (164 SSU)
Voltage: 100 %V

(After coil temprature rises and saturated)

Type Model Numbers Time ms E
T1 T2
Standard DSG-01-3C2- A 15 23
Type DSG-01-3C2- D 48 19
DSG-01-3C2- R 50 100

Shockless Type [Reaults of Measurement] DSG-01 Series Solenoid
[Test Circuit and Conditions] Operated Directional Valves
Accelmeter ON G1 OF F
ab Speed SOL a G2
Ps
Load Acceleration (G )

Pressure (Ps)

T1 Time T2

Setting Pressure (Ps): 7 MPa (1020 PSI) Type Model Nmbers Time Acceleratio n
ms m/s2 (G)
Load (W): 1000 kg (2205 1bs.) Shockles s S-DSG-01-3C2- D T1 T2
Speed: 8 m/min (26.2 ft./min) Type DSG-01-3C2- D G1 G2
Viscosity: 35 mm 2/s (164 SSU ) 70 30
Standard 12 7
Type (1.2) (0.7)

35 25 18 15
(1.8) (1.5)

DSG-01 Series Solenoid Operated Directional Valves 353

Pressure Drop
Pressure drop curves based on viscosity of 35 mm2/s (164 SSU) and specific gravity of 0.850.

Standard Type: DSG-01 Pressure Drop Curve Number
P→A B→T P→B A→ T P→T
PSI MPa 12 Model Numbers
600 3 4444
4 DSG-01-3C2 55552
4 DSG-01-3C3 4444
Pressure Drop P 500 5 DSG-01-3C4 4444
DSG-01-3C40 11112
3 DSG-01-3C60 5353
400 DSG-01-3C9 4544
DSG-01-3C10 4444
300 2 DSG-01-3C11 4445
DSG-01-3C12 5454
200 DSG-01-2D2 5454
1 DSG-01-2B2 5555
DSG-01-2B3 54
100 DSG-01-2B8

0 20 40 60 80 100 L/min
0 20 24 U.S.GPM
0 4 8 12 16

Flow Rate

Shockless Type: S-DSG-01

PSI MPa 1 Model Numbers Pressure Drop Curve Number
180 1.2 2 P→A B→T P→B A→ T
S-DSG-01-3C2
160 1.0 S-DSG-01-3C4 1111
S-DSG-01-2B2 1212
Pressure Drop P 120 0.8 1111

0.6
80

0.4

40
0.2

0 10 20 30 40 50 60 L/min
0

0 2 4 6 8 10 12 14 16 U.S.GPM

Flow Rate

For any other viscosity, multiply the factors in the table below.

mm2/s 15 20 30 40 50 60 70 80 90 100
Viscosity

SSU 77 98 141 186 232 278 324 371 417 464

Factor 0.81 0.87 0.96 1.03 1.09 1.14 1.19 1.23 1.27 1.30

For any other specific gravity (G'), the pressure drop ( P') may be
obtained from the formula below.

P' = P (G'/0.850)

354 DSG-01 Series Solenoid Operated Directional Valves

DIRECTIONAL CONTROLS

Mounting surface: ISO 4401-AB-03-4-A

TERMINAL BOX TYPE

Models with AC Solenoids Single Solenoid: Spring Offset
Double Solenoid: Spring Centred & No-Spring Detented DSG-01-2B -A -70/7090

DSG-01- 3C -A -70/7090 145.7
2D2 (5.74)

Solenoid Indicator Light 40.5 Pressure Port "P" SOL b
(For Sol a) (1.59) Cylinder Port "A"

5.5(.22) Dia. Through 76.7
9.5(.37) C' Bore (3.02)
4 Places 31 0.75
(1.22) (.03)
32.5 142.2
(1.28) (5.60)

Cylinder Port "B" Solenoid Indicator Light DSG-01 Series SolenoidFor other dimensions, refer to "spring Centred andE
Tank Port "T" (For Sol b) Operated Directional ValvesNo-Spring Detented" models.
Solenoid being mounted in the reverse position
SOL a side is also available.

Space Needed to Remove
Solenoid-Each End

Electrical Conduit Connection
"C " Thd. (Both Ends)

Mounting Surface Lock Nut Manual Actuator-Both Ends 3(.12) Dia.★
(O-Rings Furnished) Tightening Torque: 6(.24) Dia. 5(.20) Deep
10.3-11.3 Nm (91-100 IN.lbs.)
VIEW ARROW X

Model Numbers "C " Thd. ★ Locating pin can be fitted to this hole to conform with
DSG-01- -A -70 G 1/2 ISO4401-03-02-94. However, locating pin is not provided
DSG-01- -A -7090 1/2 NPT
to standard design valve. When ordering valve with a

locating pin, please consult Yuken.

DIMENSIONS IN
MILLIMETRES (INCHES)

Models with DC Solenoids: (S-)DSG-01- -D -70/7090

Models with R Type Solenoids: (S-)DSG-01- -R -70/7090

Spring Centred Space Needed to Remove
No-Spring Detented Solenoid-Each End
Spring Offset

Double Solenoid Spring Offset Type
Models Only

For other dimensions, refer to models with AC solenoids.

DSG-01 Series Solenoid Operated Directional Valves 355

Sub-plate : DSGM-01/01X/01Y-31/3180/3190 DIMENSIONS IN
MILLIMETRES (INCHES)
40.5 14.2
"C" Thd.
(1.59) (.56) 4 Places
30.2
32 P
7 (.28) Dia. (1.19) "D" Thd. "E" Deep AB
4 Places (1.26)
21.5 4 Places 16 T

(.85) 12.7(.50) (.63)
15

(.59)
5.2 0.75
(.20) (.03) 12.5

15.5 (.49)
(.61) 35.5
25.8
(1.02) (1.40)
31 58.5
(1.22)
31.75 8.5 (2.30)
(1.25) (.33)
48 7.5
(1.89) (.30)
63
(2.48)
37
(1.46)
24
(.94)
11
(.43)
7 7 (.28) Dia. Through
71 (.28) 11 (.43) Dia. Spotface
(2.80)
2 Places
85
(3.35)

Sub-plate Piping Size "D" Thd. "E"
Model Numbers "C" Thd. mm(IN.)
DSGM-01-31 M5
DSGM-01-3180 Rc 1/8 No.10-24 UNC 10 (.39)
DSGM-01-3190 1/8 BSP.F
DSGM-01X-31 1/8 NPT M5 12 (.47)
DSGM-01X-3180 No.10-24 UNC
DSGM-01X-3190 Rc 1/4 10 (.39)
DSGM-01Y-31 1/4 BSP.F M5
DSGM-01Y-3190 1/4 NPT No. 10-24 UNC 12 (.47)
10 (.39)
Rc 3/8 12 (.47)
3/8 NPT

356 DSG-01 Series Solenoid Operated Directional Valves

DIRECTIONAL CONTROLS

PLUG-IN CONNECTOR TYPE (N) DIMENSIONS IN
MILLIMETRES (INCHES)
PLUG-IN CONNECTOR WITH INDICATOR LIGHT (N1)

Models with AC Solenoids: DSG-01- -A - NN1-70/7090

Models with DC Solenoids: (S-)DSG-01- -D - NN1-70/7090

Models with R Solenoids: (S-)DSG-01- -R -N-70/7090 The position of the Plug-in connector can be changed as

illustrated below by loosening the lock nut. After

C Cable Departure completion of the change, be sure to tighten the lock nut

D Cable Applicable: with the torque as specified below.

Outside Dia. .... 8 - 10 mm (.31 - .39 in.)
Conductor Area ....
72.5 29.5 H Not Exceeding 1.5 mm2 (.0023 Sq. in.) 46(1.81)
(2.85) (1.16) G

SOLa 38 SOL b A100
(1.50)
Double Solenoid Lock Nut E
Models Only L Tightening Torque:
D10.3 - 11.3 Nm (90 - 100 IN.lbs.)

23.5 FModel NumbersC D E F GH
(.93)
DSG-01- -A -N 196.4 76.7 88.5 53 27.5 39
E(7.73) (3.02) (3.48) (2.09) (1.08) (1.54)

DSG-01 Series Solenoid(S-)DSG-01- -D -N204.4 80.7 99.5 64 27.5 39
Operated Directional Valves(8.05) (3.18) (3.92) (2.52) (1.08) (1.54)

(S-)DSG-01- -R -N 204.4 80.7 102.5 57.2 34 53
(8.05) (3.18) (4.04) (2.25) (1.34) (2.09)

For other dimensions, refer to "Terminal Box type" (Page 356).

Models with Push Button & Lock Nut AC: 132.2(5.20) Lock Nut
(S-)DSG-01- - -C DC/R: 136.2(5.36)
Press the "Push Button" then turn "Lock Nut"
clockwise. The position of the "Push Button" is held.
Be sure to loosen "Lock Nut" fully before solenoid
is energised.

SOL b

Push Button

Interchangeability in Installation Current and New Design

In ouder to achieve higher pressure, higher flow, lower pressure drop DSG-01 valves has been upgraded from the 60
design series to the 70 design series.
The figures in the table below are the comparison between the current and the new design valves.

● Specifications Max. Operating Max. T-Line Max. Changeover Pressure Drop★ Mass kg (lbs.)
Pressure Back Pres. Frequency MPa (PSI)
Max. Flow MPa (PSI) MPa (PSI) {P→A} 3C /2D 2B
Design Number L/min Cycle/min (min–1)
35(5080) 21(3050) 0.9(130) 1.85(4.08) 1.4(3.09)
(U.S.GPM) 300
31.5(4570) 16(2320) (R Type sol. Only 120) 1.0(145) 2.2(4.85) 1.6(3.53)
New Design: 70 100(26.4)

Current Design: 60 63(16.6)

★ Flow Rate: 60 L/min (15.9 U.S.GPM), Viscosity: 30 mm2/s (141 SSU), Spool type "2" (Closed centre)

● Interchangeability in Installation
Interchangeability in installation in maintained though there are minor differences in demension as in the following table.

A

E F Design
H Number
C Coil Type ABCDE FH J KL

SOL a SOL b A100 New Design 196.4 142.2 46 88.8 95 50.7 26 70 13.5 70.5

A : 70 (7.73) (5.60) (1.81) (3.50) (3.74) (2.00) (1.02) (2.76) (.53) (2.78)
35 AC

Current Design 191.4 142.7 48 90.3 90 50.7 23.5 65 11 72
: 60 (7.54) (5.62) (1.89) (3.56) (3.54) (2.00) (.93) (2.56) (.43) (2.83)

K 27 New Design 204.4 146.2 46 88.8 95 54.7 26 70 13.5 70.5
J (1.06) DC : 70 (8.05) (5.76) (1.81) (3.50) (3.74) (2.15) (1.02) (2.76) (.53) (2.78)

B R Current Design 210 152 48 90.3 90 60 23.5 65 11 72
: 60 (8.27) (5.98) (1.89) (3.56) (3.54) (2.36) (.93) (2.56) (.43) (2.83)

DSG-01 Series Solenoid Operated Directional Valves 357

Details of Receptacle Double Solenoid Type Single Solenoid Type
Power Suppl y 3
Type of
Electrical Conduit SOL. b

Connection

Terminal Power Supply 3 Power Supply 3
Box Type (For SOL.a) (For SOL.b)
Ground 1
Indicator Light SOL. b

SOL. a

Common Plate 2 Indicator Light Indicator Light
Commo n 3 Ground 1 Ground

Ground

Plug-in 1
Connector
1
Type
1-Power Suppl y 3

3 2-Power Suppl y 3

3 2

2

1. There are two grounding terminals. You can use either one. DANGER
2. If you do not need the common plate, remove it.
3. With DC solenoids, polarity is no question. Do not perform wiring while the power is on.
Doing so may result in electric shock, burns or death.
Make the wiring properly. Improper wiring will cause an
irregular movement of the machine, resulting in a grave
accident.

Electrical Circuit AC Electric Source AC→DC Rectified
DC
Type of
Electrical Conduit

Connection

Indicator Light Indicator Light Indicator Light
Voltage-Surge
Power Power Power Suppressor
Supply Supply Supply

Terminal SOL. SOL. SOL.
Box Type

Common Common Voltage-Surge Common Rectifier
Ground Ground Suppressor Ground Circuit

Indicator Light Voltage-Surge
Suppressor
(Integrated in "N1"
model only) SOL.

SOL. Rectifier
Circuit
1-Power 1-Power 1-Power
Supply Supply Supply

Plug-in 2-Power SOL. 2-Power
Connector Supply Supply
Ground 2-Power Ground
Type Supply

Ground

Indicator Light Voltage-Surge

(Integrated in "N1" Suppressor
model only) (Circuit composed
in coil)

358 DSG-01 Series Solenoid Operated Directional Valves

DIRECTIONAL CONTROLS

■ List of Seals - -70/7090
-DSG-01-

Spring Offset type 28
17

16 12 18 14 19 29 10 13 15

30 SOL a SOL b
9
7
6

8

5 4 3 1 8 2 27 25 24 21 23 20 26 22 E
11

-DSG-01- - -N/N1-70/7090

18 16 15 14 11 19

SOL a SOL b DSG-01 Series Solenoid
Operated Directional Valves
List of Seals

Item Name of Parts Part Numbers Qty. 2B Remarks
3C 2D 4 Included in Solenoid Ass'y (Item 11)
8 O-Ring SO-NB-A-012 (NBR, Hs90) 1
9 O-Ring SO-NB-P18 44 1
18 Packing 1790S-VK421290-8 2
19 O-Ring S6 11 1
24 O-Ring AS 568-026 (NBR, Hs70) 22 1
25 O-Ring SO-NB-P18 22 1
26 O-Ring SO-NA-P20 22 2
27 O-Ring SO-NA-P4 22 2
30 Plug 1790S-VK418329-9 44

When ordering the O-Rings, please specify the seal kit number from the table below.

Valve Model Numbers Seal Kit No. O-Ring Details for Seal Kit
-DSG-01- - -70/7090 KS-DSG-01-70 8 (4 Pcs.), 9 & 25 (2 Pcs., see above), 27 (4 Pcs.)
-DSG-01- - -N-70/7090 KS-DSG-01-N-70 8 (4 Pcs.), 9 & 25 (2 Pcs., see above)

Solenoid Ass'y, Coil, Receptacle and Connector Refer to page 360 for the details of these parts.

DSG-01 Series Solenoid Operated Directional Valves 359