HYDRAULICS AND PNEUMATICS THIRD-EDITION_ A TECHNICIANS AND ENGINEERS GUIDE

Index Terms Links

NTP 54

O 128
206
O ring seal 128
Occupational Health & Safety Act 170
OD 156
Offset zero 191
Oil (hydraulic) 193
One-way limit
OR gate 23
Orifice plate 206
OSHA
77
P 187

P port 11
P-I converter 15
Pascal (unit of pressure)
Pascal’s law 211
PC. see Programmable Controller 157
Permits to work
Petroleum based fluids 53
Physical normal condition 177
PI/PID controller 143
Pilot operated check valve
Pilot operated regulator 71
Pilot operated valve 85 143
Piping (hydraulic) 165
Piping (pneumatic) 161
Piston compressor 54

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Index Terms Links 77
35
Piston motor 135
Piston Pump 42
Plastic tubing
PLCs. see Programmable Controller (PC) 163
Plug top indicator
Plug valve 220
Poise 180
Poppet valve 159
Port
Position control of spool 79
Positioner (valve) 75
Positive displacement device 99
Positive seal 184
Pour point 32
Power (of a pump) 128
Power assistance 160
Power, definition of 33
Precharge 110
Prefill 13
Pressure 151
144
differential
gauge 12
head 12
measurement of 11
regulation of (hydraulic) 19
regulation of (pneumatic) 3
Units 69
Pressure compensated flow control 15
Pressure control proportional valve 138
Pressure controlled sequence 107
198

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Index Terms Links

Pressure definition of 10
Pressure droop 72
Pressure drop in piping 162
Pressure line filter 47
Preventitive maintenance 224
Primary air treatment 52
Prime mover 1
Process control 169
Process variable 200
Profibus 203
Programmable Controller (PC) 200
Programmable electronic system and
210
safety 207
Prohibition notice 176
Proportional controller 103
Proportional valve control cards
Proportional valves 97
Proximity switches 192
PT100 sensor
Pulse Timer 26
Pulse Width Modulation 195
Pump lift 101
Pump:
34
circulation
combination 49
comparison 45
displacement 44
gear 33
gerotor 37
introduction 38
31

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Index Terms Links

Pump (Cont.) 38
lobe 42
piston 46
problems 31
symbol 40
vane
101
PV. see Process Variable
PWM 163

Q 77
42
Quick disconnect hosing 104
206
R 51
192
R port 66
Radial piston pump 141
Ramped response 62
Reasonably practicable 174
Receiver (air) 70
Reflex proximity sensor 70 71
Refrigerated dryer 149
Regeneration 127
Relative humidity 92
Relay (air) 47
Relief valve
Relieving pressure regulator
Reservoir (hydraulic)
Response time
Restriction check valve
Return line filter

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Index Terms Links

Reynolds number 22
Ring seal 121
Risk assessment 207
Risk, (definition) 207
Rod (piston) 121
Rodless cylinder 124
Rotary actuators 130
Rotary valve
Rotational speed (rotary actuator) 85
RTD sensor 132
Rung (PC)
Running torque 26
201
S 131

SAE 160
Safety 205
Safety factor 165
Safety legislation 209
Safety policy 206
Safety procedures 210
Safety valve
Saturated air 60 70
Saybolt universal seconds 62
Schedule ANSI 159
Scraper seal 165
Screw compressor 122
Seals 57
Seals material 120 128
Self priming pump 129
34

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Index Terms Links

Separator 52
Sequence diagram 189
Sequence valve
Sequencing applications 95 199
Sequential function chart 189
Service unit 202
Servo valve
Setpoint 72
Shoe plate 107
Shuttle valve 169
SI units
Side loads 42
Sieve number 92 93 190
Silencer 7
Silicon seal 38 41 122
Simulation 47
Single acting cylinder 164
Slippage 130
Snubber restriction 226
Solenoid tester 119
Solenoid valve 33
SP. see Setpoint 20
Speed control 214
Speed of a cylinder 83 220
Spool valve
SR flip flop 135
Stall torque 119
Standard temperature
81
and pressure 194
Starting torque 131

53
131

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Index Terms Links

State transition diagram 199
Statement list 202
Static seal 128
STD 199
Stiction 110
Stokes 159
Stop tube 122
STP
Streamline flow 53
Structured text 22
SUS 202
Swash plate 159
Synchronisation 42

of actuators 139
Synthetic fluids 159
System
20 47 214
T
77
T port 151
Tank air filters 149
Tank, hydraulic 162
Taper threads
Technical normal condition 53
Teflon seal 130
Telescopic cylinder 123
Temperature scales
Temperature transducers 25
Thermistor 26
Thermocouple 26
27

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Index Terms Links

Threaded connections 162
Three term controller 177
Time delay valve
TON/TOF 96 194
Torque 195

definition of 15 130
motor 107
rating 131
running 131
stall 131
Toxicity 161
Tubing 163
Turbine flowmeter
Turbine motor 23
Turbulent flow 135
Two stage compressor
Two wire system 22
55
U 19 21

U ring seal 129
UCC System 20 214
UNF
Units, definition of 162
Unloading valve 6
37 46
V
182
Valve: 36 181
actuator
balanced

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Index Terms Links

Valve (Cont.) 180
ball 137
bleed-off 114
cartridge 112
CETOP
changeover 3
check 87 143
check, pilot operated 89
check, restriction 92
cushion 122
fast exhaust 92
flow control 137 179
flow divider 140
forces on 181
globe 180
group selector 197
infinite position 78
jet pipe servo 108 109
lands 81
loading 46
modular 110 111
pilot operated 85 89 143
pilot operated
check 89
plug 180
poppet
positioner 79
process control 184
proportional 179
relief
97
70

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Index Terms Links

Valve (Cont.) 92
restriction check 85
rotary 60 70
safety 95 199
sequence 107
servo 92 93 190
shuttle 83 220
solenoid 81
spool 76
symbols 92
throttle relief 96 194
time delay 83
transitional state 37
unloading 57
133
Vane compressor 40
Vane motor 23
Vane pump 23
Variable area flowmeter 159
Venturi 160
Viscosity 130
Viscosity index 173
Viton seal 21
Volume booster
Volumetric flow 160
11
W 65

W number
Water gauge
Water trap

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Index Terms Links

Water/glycol fluid 158
Water/oil fluid 158
Welded connections 162
Wet design
Wet screw compressor 97
wg 57
Wiper seal 11
Work definition of 122
Working pressure 13
36
Z
170
Zero offset

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