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For system diagrams and component identification

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Presentation on theme: "For system diagrams and component identification"— Presentation transcript:

1 For system diagrams and component identification
Pneumatic Symbols For system diagrams and component identification 1

2 Contents Standards Actuators Basic symbols Valve symbol structure
Functional elements Valve functions Flowlines Three position valves Connections Operators Conditioners and plant Port marking Pressure regulators Function components Relief valves Symbol Library Click the section to advance directly to it

3 Graphic Symbols Standards
Pneumatic symbols conform to and are devised from the International Standard ISO This covers graphical symbols for Fluid Power Systems and Components Port markings for fluid power valves are not covered by the ISO standard. These are taken from the recommendations of CETOP RP 68 P 2

4 Basic Symbols

5 Shapes These shapes and lines in the relative proportions shown, make up a set of basic symbols from which fluid power symbols and circuits are constructed

6 Basic Symbols (shapes)
Symbol sets can be drawn to any size but their scale and relative proportions are determined by a basic dimension of your choice “l” Circles l energy conversion units 3/4 l measuring instrument 1/3 l mechanical link 1/3 l roller 10

7 Basic Symbols (shapes)
Square control component connections perpendicular to sides l conditioning apparatus connections to corners Square at 45o > l Rectangle l cylinders and valves

8 Basic Symbols (shapes)
Rectangles l piston continued 1/4 l cushion 1/2 l min 1 l certain control methods, length between limits to suit 1/2 l 1/2 l max 2 l

9 Basic Symbols Semi-circle Capsule Double line l
rotary actuator, motor or pump with limited angle of rotation Semi-circle 2 l Capsule l pressurised reservoir air receiver, auxiliary gas bottle Double line mechanical connection piston rod, lever, shaft 1/5 l 13

10 Basic Symbols Line Dashed Chain Line Working line, pilot supply,
2 12 10 Line Working line, pilot supply, return, electrical 3 1 Dashed Pilot control, bleed, filter Chain Enclosure of two or more functions in one unit Line Electrical line 14

11 Functional Elements

12 Functional Elements Triangle Spring Arrow
Direction and nature of fluid, open pneumatic or filled hydraulic Spring size to suit Arrow Long sloping indicates adjustability 1/3 l 15

13 Functional Elements Arrows Tee Restriction Straight or sloping
path and flow direction, or motion Tee Closed path or port Restriction Size to suit 15

14 Functional Elements Curved arrows Shaft rotation Seating rotary motion
clockwise from right hand end anti-clockwise from right hand end both Seating 90o angle 16

15 Functional Elements Temperature Operator Prime mover
Indication or control size to suit Operator Opposed solenoid windings Prime mover M M Electric motor 16

16 Flowlines and Connections

17 Flowlines Junction Junction Crossing Flexible line Single
Four way junction Crossing not connected Flexible line Hose usually connecting parts with relative movement 17

18 Connections Air bleed Air exhaust Continuous Temporary by probe
No means of connection With means of connection

19 Connections Coupling quick release Coupling quick release self sealing
Both to exhaust Coupling quick release self sealing Source sealed Coupling quick release self sealing Both sealed

20 Connections Rotary connection one line Rotary connection two lines
Rotary connection three lines

21 Conditioners and Pressure Producing Plant

22 Conditioners Water separator with manual drain
Water separator with automatic drain Filter with manual drain Filter with automatic drain Lubricator

23 Conditioners Dryer Cooler with and without coolant flow lines Heater
Combined heater / cooler

24 Plant Compressor and electric motor Air receiver Isolating valve
Air inlet filter

25 Pressure Control

26 Pressure regulators A pressure regulator symbol represents a normal state with the spring holding the regulator valve open to connect the supply to the outlet. The dotted line represents the feedback, this opposes the spring and can vary the flow through the valve from full flow, through shut off, to exhaust. The symbol is usually drawn in only this one state. The flow path can be imagined to hinge at the right hand end to first shut off the supply then connect to the exhaust. Adjustable Regulator simplified Adjustable Regulator with pressure gauge simplified

27 Filter Regulator Lubricator
FRL Combined unit FRL Simplified symbol

28 Pressure relief valves
A pressure relief valve symbol represents a normal state with the spring holding the valve closed. The dotted line represents feed-forward, this opposes the spring and can be imagined to lift the flow path. When the pressure reaches an excess value the flow path will line up with the ports and flow air to relief. Adjustable relief valve simplified Preset relief valve simplified

29 Actuators

30 Actuators Cylinders symbols can be any length over “l”
The piston and rod can be shown in the retracted, extended or any intermediate position “l”

31 Single acting Single acting sprung instroked
Single acting sprung outstroked Single acting sprung instroked magnetic * Single acting sprung outstroked magnetic * * ISO provides no example for magnetic cylinders

32 Single acting without spring
Single acting normally instroked external force returns Single acting normally outstroked external force returns Single acting normally instroked magnetic external force returns Single acting normally outstroked magnetic external force returns Note: the hardware is usually double acting cylinders applied as single acting

33 Double acting * Double acting adjustable cushions
Double acting through rod Double acting magnetic * Double acting rodless * * ISO provides no example for magnetic or rodless cylinders

34 Rotary actuators Semi rotary double acting
Rotary motor single direction of rotation Rotary motor bi-directional

35 Simplified cylinder symbols
Single acting load returns Single acting spring returns Double acting non cushioned Double acting adjustable cushions Double acting through rod

36 Valve symbol structure

37 Valve symbol structure
The function of a valve is given by a pair of numerals separated by a stroke, e.g. 3/2.. The first numeral indicates the number of main ports. These are inlets, outlets and exhausts but excludes signal ports and external pilot feeds. The second numeral indicates the number of states the valve can achieve.

38 Valve symbol structure
A 3/2 valve therefore has 3 ports (normally these are inlet, outlet and exhaust) and 2 states (the normal state and the operated state) The boxes are two pictures of the same valve operated normal

39 Valve symbol structure
A valve symbol shows the pictures for each of the valve states joined end to end operated normal

40 Valve symbol structure
A valve symbol shows the pictures for each of the valve states joined end to end operated normal

41 Valve symbol structure
The port connections are shown to only one of the diagrams to indicate the prevailing state normal

42 Valve symbol structure
The operator for a particular state is illustrated against that state Operated state produced by pushing a button

43 Valve symbol structure
The operator for a particular state is illustrated against that state Operated state produced by pushing a button Normal state produced by a spring

44 Valve symbol structure
The operator for a particular state is illustrated against that state Operated state produced by pushing a button Normal state produced by a spring

45 Valve symbol structure
The valve symbol can be visualised as moving to align one state or another with the port connections

46 Valve symbol structure
The valve symbol can be visualised as moving to align one state or another with the port connections

47 Valve symbol structure
The valve symbol can be visualised as moving to align one state or another with the port connections

48 Valve symbol structure
A 5/2 valve symbol is constructed in a similar way. A picture of the valve flow paths for each of the two states is shown by the two boxes. The 5 ports are normally an inlet, 2 outlets and 2 exhausts

49 Valve symbol structure
The full symbol is then made by joining the two boxes and adding operators. The connections are shown against only the prevailing state

50 Valve symbol structure
The full symbol is then made by joining the two boxes and adding operators. The connections are shown against only the prevailing state

51 Valve symbol structure
The full symbol is then made by joining the two boxes and adding operators. The connections are shown against only the prevailing state

52 Valve symbol structure
The recommended spacing of the connections 1 l 1 /4 l 1/2 l 1/4 l 1/4 l 1/2 l 1/4 l 1/2 l

53 Valve symbol structure
The boxes can be joined at either end but the operator must be drawn against the state that it produces. The boxes can also be flipped A variety of symbol patterns are possible normally closed normally open

54 Valve symbol structure
The boxes can be joined at either end but the operator must be drawn against the state that it produces. The boxes can also be flipped A variety of symbol patterns can be produced Reverse connected

55 Valve functions

56 Valve functions Basic valves before operators are added
Examples, push button operated with spring return Normal position Function 2/2 Function 3/2 25

57 Valve functions Basic valves before operators are added
Examples, push button operated with spring return Operated position Function 2/2 Function 3/2 25

58 Valve functions Basic valves before operators are added
Examples, push button operated with spring return Normal position Function 4/2 Function 5/2 26

59 Valve functions Basic valves before operators are added
Examples, push button operated with spring return Operated position Function 4/2 Function 5/2 26

60 Valve functions 5/3 Three position valves have a normal central position that is set by springs or with a manual control such as a lever The flow pattern in the centre position varies with the type. Three types will be considered 1, All ports sealed 2, Outlets to exhaust, supply sealed 3, Supply to both outlets, exhausts sealed

61 Valves 5/3 All valves types shown in the normal position
Type 1. All ports sealed Type 2. Outlets to exhaust Type 3. Supply to outlets

62 Valves 5/3 All valves types shown in the first operated position
Type 1. All ports sealed Type 2. Outlets to exhaust Type 3. Supply to outlets

63 Valves 5/3 All valves types shown in the normal position
Type 1. All ports sealed Type 2. Outlets to exhaust Type 3. Supply to outlets

64 Valves 5/3 All valves types shown in the second operated position
Type 1. All ports sealed Type 2. Outlets to exhaust Type 3. Supply to outlets

65 Valves 5/3 All valves types shown in the normal position
Type 1. All ports sealed Type 2. Outlets to exhaust Type 3. Supply to outlets

66 Operators

67 Operators Manual General manual Lever Push button Pedal Pull button
Treadle Push/pull button Rotary knob 27

68 Operators Mechanical Plunger Pressure Spring normally as a return
Pilot pressure Roller Differential pressure Uni-direction or one way trip Detent in 3 positions 27

69 Operators Electrical Solenoid direct Solenoid pilot
with manual override and external pilot supply Solenoid pilot When no integral or external pilot supply is shown it is assumed to be integral Solenoid pilot with manual override and integral pilot supply 27

70 Port markings

71 Port Markings To CETOP RP68P 2 1 2 3 12 10 12 10 1 2 4 4 2 14 12 14 12
5 3 29

72 Port Markings To CETOP RP68P 2 2 12 10 12 10 1 3 1 2 4 4 2 14 12 14 12
5 3 29

73 Port Markings To CETOP RP68P 2 1 2 3 12 10 12 10 1 2 4 4 2 14 12 14 12
5 3 29

74 Port Markings To CETOP RP68P 2 1 2 3 12 10 12 10 1 2 4 4 2 14 12 14 12
5 3 29

75 Port Markings To CETOP RP68P 2 1 2 3 12 10 12 10 1 2 4 4 2 14 12 14 12
5 3 29

76 Function components

77 Function components Non-return valve simplified
Flow regulator uni-directional Flow regulator bi-directional simplified Two pressure ‘AND’ simplified Note: The output can exhaust back and is not trapped Shuttle valve ‘OR’ simplified

78 Function components Quick exhaust valve with silencer simplified
Pressure to electric switch preset Pressure to electric switch adjustable

79 Symbol Library Actuators Function Components Solenoid Valves Vacuum
Electrical and electronic Air Line Click the section arrow to go to it

80 Symbol Library Actuators

81 Single acting cylinders
Sprung in Magnetic sprung in non-rotating rod Sprung out Magnetic sprung out non-rotating rod Magnetic sprung in Magnetic sprung out

82 Single acting cylinders
Sprung in adjustable cushion Sprung out adjustable cushion Magnetic sprung in adjustable cushion Magnetic sprung out adjustable cushion

83 Single acting cylinders
Sprung in adjustable cushion non-rotating rod Sprung out adjustable cushion non-rotating rod Magnetic sprung in adjustable cushion non-rotating rod Magnetic sprung out adjustable cushion non-rotating rod

84 Single acting bellows Bellows single convolution
Bellows double convolution Bellows triple convolution

85 Double acting cylinders
Non-magnetic Magnetic hydraulic Non-magnetic adjustable cushioned Magnetic adjustable cushioned Non-magnetic rod bellows Magnetic adjustable cushioned rod bellows Magnetic

86 Double acting cylinders
Non-rotating rod Magnetic non-rotating rod Active brake Magnetic active brake Passive brake Magnetic passive brake Guided rod magnetic

87 Double acting cylinders
Non-magnetic through rod Non-magnetic adjustable cushioned through rod Magnetic through rod Magnetic adjustable cushioned through rod

88 Double acting cylinders
Three position adjustable cushions (equal strokes) Three position adjustable cushions magnetic (equal strokes) Four position adjustable cushions (unequal strokes) Four position adjustable cushions magnetic (unequal strokes)

89 Other actuators With electronic analogue output of piston position
Slide unit Semi-rotary actuator Rotary motor bi-directional and non-reversible

90 Rodless cylinders Cushioned Cushioned magnetic Cushioned passive brake
Cushioned magnetic passive brake Cushioned active brake Cushioned magnetic active brake

91 Rodless cylinders Twin stroke cushioned
Twin stroke air through carriage Twin stroke cushioned magnetic Twin stroke air through carriage magnetic

92 Shock absorbers Self adjusting Adjustable

93 End

94 Symbol Library Air Line Equipment

95 Combination units FRL with shut off valve and pressure gauge
Lubro-control unit Filter and lubricator

96 Combination units Breathing air set Filter regulator
Filter regulator with gauge

97 Filters Filter with manual drain Filter with automatic drain
Filter with automatic drain and pressure drop indicator

98 Pressure regulators Pre-set relieving
Pre-set relieving with pressure gauge Adjustable relieving Adjustable relieving with pressure gauge

99 Pressure regulators Pilot operated
Pilot regulator with independent feedback Pilot operated regulator controlled from pilot regulator

100 Pressure regulators Precision dual stage (11-818)
2 3 Proportional pressure valve

101 Lubricator Lubricator

102 Pressure relief valves
Preset, no means of connection to exhaust Preset, tapped exhaust port Adjustable, no means of connection to exhaust Adjustable, tapped exhaust port Pilot operated

103 Other components Silencer Filter silencer
Water separator automatic drain

104 End

105 Electrical and Electronic
Symbol Library Electrical and Electronic

106 Sensors Reed switch 2 wire Reed switch changeover
Loads must be additionally suppressed brown +V Load Reed switch 2 wire blue 0V brown +V blue black 0V Load Reed switch changeover Reed switch 3 wire with led indicator (emulating current sourcing pnp device) brown +V blue 0V Load 0V black brown +V blue 0V Load +V black Reed switch 3 wire with led indicator (emulating current sinking npn device) brown +V blue Load 0V Reed switch 2 wire with led indicator

107 Sensors Solid state magnetic sensor pnp (current sourcing)
Loads must be additionally suppressed Solid state magnetic sensor pnp (current sourcing) brown +V blue 0V black pnp Load 0V 1 3 4 pnp brown +V blue 0V black Load 0V Solid state magnetic sensor plug in cable pnp (current sourcing) Solid state magnetic sensor npn (current sinking) brown +V black npn Load +V blue 0V 1 Solid state magnetic sensor plug in cable npn (current sinking) 3 4 npn brown +V black Load +V blue 0V Solid state magnetic sensor with pulse extension brown +V blue 0V black Load 0V

108 Sensors Reed switch 2 wire with led indicator and plug in cable
Loads must be additionally suppressed 1 brown +V Reed switch 2 wire with led indicator and plug in cable 4 black Load 0V Reed switch 2 wire with led indicator and plug in cable 1 + brown blue Load 0V

109 Electrical Symbols

110 Electrical symbols Direct current ( DC ) Line to earth
Alternating current ( AC ) Line to chassis AC or DC Cell 12 V or Positive and negative polarity Battery

111 Electrical Components
Normally open closed Normally open closed Relay contact General manual switch contact Push button contact Roller switch contact Pull button contact Delay to operate Twist switch contact Delay to reset

112 Electrical Components
Relay coil Relay coil delay to operate contacts Relay coil delay to reset contacts Solenoid valve coil

113 Electrical Components
Proximity switch Bell Touch sensitive switch Buzzer P Pressure switch Microphone Supply and return 24V 0V Loudspeaker

114 Electronic Component Symbols

115 Electronic Components
Opto-isolator Resistors Resistor Variable Potentiometer Pre-set pot Voltage dependent Light dependent Windings inductor inductor with core variable inductor transformer V or Capacitors capacitor polarised capacitor variable capacitor pre-set capacitor Diodes diode zener diode light emitting diode

116 Electronic Components
Thyristor Fuse Triac Wires connected or NPN Transistor Wires crossing PNP Transistor Double junction or Photo-transistor

117 Electronic Components
Conductors in a cable Motors dc & ac M M Conductors twisted Generator G Plug and socket Lamp steady & flashing Coaxial plug and socket Operational amplifier Meters for amps, volts, ohms & watts A W V

118 End

119 Function Fittings and Components
Symbol Library Function Fittings and Components

120 Function fittings Blocking fitting Pressure reducing fitting
1 2 12 Blocking fitting 1 2 Pressure reducing fitting 1 2 Pneumatic sensor fitting

121 Function components Air fuse Non return valve Non return valve

122 Function components bi-directional flow regulator
Exhaust flow regulator with and without silencer Silencers Shuttle valve ‘OR’ Two pressure valve ‘AND’ (will exhaust either signal back)

123 Function components Uni-directional flow regulator
Quick exhaust valve with and without silencer Rotating joint Pressure indicator Pressure drop indicator

124 Quick release couplings
made released Both to exhaust Source sealed Both sealed

125 End

126 Symbol Library Solenoid Valves

127 Solenoid valves Direct solenoid actuated spring return 2/2 NC
with man override on the solenoid Direct solenoid actuated spring return 2/2 NC 2 10 12 12 2 10 1 3 12 10 2 2 10 12 1 3 Direct solenoid actuated spring return 3/2 NC 1 2 3 12 10 1 2 3 10 12 Direct solenoid actuated spring return 3/2 NO

128 Solenoid valves Pilot solenoid actuated spring return 3/2 NC
with man override on the solenoid 1 2 3 12 10 1 2 3 12 10 Pilot solenoid actuated spring return 3/2 NC 1 2 3 12 10 1 2 3 12 10 Pilot solenoid actuated spring return 3/2 NO 1 2 3 12 10 1 2 3 10 12 Pilot solenoid actuated pilot solenoid return

129 Solenoid valves Pilot solenoid actuated spring return, 5/2
1 2 4 5 3 14 12 Pilot solenoid actuated spring return, 5/2 1 2 4 5 3 14 12 Pilot solenoid actuated spring return and manual override, 5/2 1 2 4 5 3 14 12 Pilot solenoid actuated pilot solenoid return, 5/2 1 2 4 5 3 14 12 Pilot solenoid actuated pilot solenoid return and manual override, 5/2

130 Solenoid valves Pilot solenoid actuated spring return, 5/2
Reverse piped 4 2 1 5 3 14 12 Pilot solenoid actuated spring return, 5/2 1 2 4 5 3 14 12 Pilot solenoid actuated spring return and manual override, 5/2 1 2 4 5 3 14 12 Pilot solenoid actuated and returned, 5/2 4 2 1 5 3 14 12 Pilot solenoid actuated and returned with manual overrides, 5/2

131 Solenoid valves 1 2 4 5 3 14 12 Double pilot solenoid actuated spring to centre all ports sealed reverse piped Priority pilot solenoid actuated differential air return, 3/2 1 2 3 10 12 1 2 4 5 3 14 12 Priority pilot solenoid actuated differential air return, 5/2

132 Solenoid valves Priority pilot solenoid actuated differential air return, 3/2 1 2 3 10 12 1 2 4 5 3 14 12 Priority pilot solenoid actuated differential air return, 5/2 Priority pilot solenoid actuated air spring return, 3/2 1 2 3 10 12 2 4 1 5 3 14 12 Priority pilot solenoid actuated air spring return, 5/2

133 Solenoid valves 1 2 4 5 3 14 12 Pilot solenoid actuated spring return, manual override, 5/2 with integral flow regulators 1 2 4 5 3 14 12 Double pilot solenoid actuated, manual override, 5/2 with integral flow regulators

134 Solenoid valves 1 2 4 5 3 14 12 Double pilot solenoid actuated, spring to centre all ports sealed, 5/3 with integral flow regulators 1 2 4 5 3 14 12 Double pilot solenoid actuated, spring to centre supply port sealed, 5/3 with integral flow regulators 1 2 4 5 3 14 12 Double pilot solenoid actuated, spring to centre supply to outlets, 5/3 with integral flow regulators

135 Proportional solenoid valves
2 4 1 5 3 Proportional flow to electrical signal 1 2 3 Proportional pressure to electrical signal

136 Safety related valves Monitored dump valve Soft start valve 1 2 3 10
12 Monitored dump valve Soft start valve 1 2 3 12 10

137 End

138 Symbol Library Valves

139 Valves un-tapped exhaust
Plunger actuated spring return 3/2 2 12 10 3 1 Roller actuated spring return 3/2 2 12 10 3 1 Push button actuated spring return 3/2 1 2 3 12 10 Toggle actuated detented 3/2 2 12 10 3 1 Rotary knob actuated detented 3/2 2 12 10 3 1 2 Key actuated detented 3/2 12 10 3 1

140 Valves integral bleed supply
Plunger / bleed actuated air return 3/2 2 12 10 1 3 Roller / bleed actuated air return 3/2 2 12 10 1 3 One way trip / bleed actuated air return 3/2 2 12 10 1 3 Low pressure / bleed actuated air return 3/2 2 12 10 1 3 Antenna / bleed actuated air return 3/2 2 12 10 1 3

141 Valves external bleed supply
Plunger / bleed actuated air return 3/2 2 12 10 3 1 Roller / bleed actuated air return 3/2 12 10 3 1 2 One way trip / bleed actuated air return 3/2 2 12 10 3 1 Low pressure / bleed actuated air return 3/2 12 10 3 1 2 Antenna / bleed actuated air return 3/2 2 12 10 3 1

142 Pilot actuated valves NC NO Pilot actuated spring return 2/2
12 2 12 10 10 1 1 Pilot actuated spring return 3/2 2 2 12 10 12 10 3 1 3 1 Double pilot actuated 3/2 2 2 12 10 12 10 3 1 3 1 Differential pilot actuated 3/2 1 2 3 12 10 2 12 10 3 1

143 Pilot actuated valves NC NO
Pressure or vacuum actuated spring return 2/2 (diaphragm valve) 1 2 3 12 10 2 1 3 12 10 Low pressure pilot actuated spring return 3/2 1 2 3 12 10 2 1 3 12 10 Low pressure pilot actuated pilot return, 3/2 1 2 3 12 10 2 1 3 12 10 Low pressure pilot actuated and returned, 3/2 1 2 3 12 10 2 1 3 12 10

144 Pilot actuated valves 1 2 3 12 10 Remote pressure bleed actuated spring return, NC, 3/2 2 1 3 12 10 Remote pressure bleed actuated spring return, NO, 3/2 12 2 10 1 4 5 3 14 Remote pressure bleed actuated spring return, 5/2

145 Pilot actuated valves Pilot actuated spring return, 4/2
1 2 4 3 14 12 1 2 4 5 3 14 12 Pilot actuated spring return, 5/2 1 2 4 5 3 14 12 Double pilot actuated 5/2 4 2 Differential pilot actuated 5/2 1 5 3 14 12

146 Pilot actuated valves 1 2 4 5 3 14 12 Pressure or vacuum actuated spring return, 5/2 (diaphragm valve) 1 2 4 5 3 14 12 Low pressure pilot actuated spring return, 5/2 1 2 4 5 3 14 12 Low pressure pilot actuated pilot return, 5/2 1 2 4 5 3 14 12 Low pressure pilot actuated and returned, 5/2

147 Pilot actuated valves 1 2 4 5 3 Double pilot actuated spring to centre all ports sealed 4 2 Double pilot actuated spring to centre supply port sealed 5 1 3 4 2 Double pilot actuated spring to centre supply to outlets 5 1 3

148 Mechanically actuated valves
NC NO Plunger actuated spring return 2/2 2 10 12 1 12 2 10 1 1 2 3 12 10 1 3 12 10 2 Plunger actuated spring return 3/2 1 2 3 12 10 2 1 3 12 10 Plunger actuated air reset 3/2

149 Mechanically actuated valves
1 2 4 3 14 12 Plunger actuated spring return, 4/2 1 2 4 5 3 14 12 Plunger actuated spring return, 5/2 1 2 4 5 3 14 12 Plunger actuated air reset 5/2

150 Mechanically actuated valves
NC NO Roller actuated spring return 2/2 2 10 12 1 12 2 10 1 1 3 12 10 2 1 3 12 10 2 Roller actuated spring return 3/2 1 2 3 12 10 2 1 3 12 10 Roller actuated air reset 3/2

151 Mechanically actuated valves
1 2 4 3 14 12 Roller actuated spring return, 4/2 1 2 4 5 3 14 12 Roller actuated spring return, 5/2 1 2 4 5 3 14 12 Roller actuated air reset 5/2

152 Mechanically actuated valves
NC NO 2 10 12 1 12 2 10 1 One way trip actuated spring return 2/2 1 2 3 12 10 2 1 3 12 10 One way trip actuated spring return 3/2 1 2 3 12 10 2 1 3 12 10 One way trip actuated air reset 3/2

153 Mechanically actuated valves
2 4 One way trip actuated spring return, 4/2 14 12 1 3 4 2 One way trip actuated spring return, 5/2 14 12 5 1 3 4 2 One way trip actuated air reset 5/2 14 12 5 1 3

154 Manually actuated valves
NC NO 2 10 12 1 12 2 10 1 Push button actuated spring return 2/2 1 2 3 12 10 2 1 3 12 10 Push button actuated spring return 3/2 1 2 3 12 10 2 1 3 12 10 Push button actuated air reset 3/2

155 Manually actuated valves
1 2 4 3 14 12 Push button actuated spring return, 4/2 1 2 4 5 3 14 12 Push button actuated spring return, 5/2 1 2 4 5 3 14 12 Push button actuated air reset 5/2

156 Manually actuated valves
NC NO 2 10 12 1 12 2 10 1 Lever actuated spring return 2/2 1 2 3 12 10 2 1 3 12 10 Lever actuated spring return 3/2 1 2 3 12 10 12 2 1 3 10 Lever actuated air reset 3/2

157 Manually actuated valves
1 2 4 3 14 12 Lever actuated spring return, 4/2 1 2 4 5 3 14 12 Lever actuated spring return, 5/2 4 2 Lever actuated air reset 5/2 12 14 5 1 3

158 Manually actuated valves
14 2 4 1 3 12 Lever actuated lever return, variable throttling, 4/2 2 4 12 1 3 14 Lever actuated lever return, variable throttling, detented, 4/2 14 2 4 1 3 12 Rotary knob actuated and returned, variable throttling, 4/2

159 Manually actuated valves
14 12 4 2 Lever actuated spring to centre all ports sealed 5 1 3 14 12 4 2 Lever actuated spring to centre supply port sealed 5 1 3 14 12 4 2 Lever actuated spring to centre supply to outlets 5 1 3

160 Manually actuated valves
1 2 4 5 3 14 12 Lever actuated, detented, all ports sealed centre 1 2 4 5 3 14 12 Lever actuated, detented, supply port sealed centre 1 2 4 5 3 14 12 Lever actuated, detented, supply to outlets centre

161 Manually actuated valves
NC NO 1 2 3 12 10 1 3 12 10 2 Pedal actuated spring return 3/2 1 2 3 12 10 2 1 3 12 10 Treadle actuated detented 3/2

162 Manually actuated valves
1 2 4 3 14 12 Pedal actuated spring return, 4/2 1 2 4 5 3 14 12 Pedal actuated spring return, 5/2 1 2 4 5 3 14 12 Treadle actuated detented 5/2

163 Manually actuated valves
1 2 4 5 3 14 12 Treadle actuated spring to centre all ports sealed 1 2 4 5 3 14 12 Treadle actuated spring to centre supply port sealed

164 Manually actuated valves
14 12 4 2 Treadle actuated, detented, all ports sealed centre 5 1 3 14 12 4 2 Treadle actuated, detented, supply port sealed centre 5 1 3

165 Manually actuated valves
Push button actuated rotary manual return 3/2 1 2 3 12 10 Push button actuated key return 3/2 2 12 10 3 1 Push actuated pull returned 3/2 1 2 3 12 10 Push actuated pull or air returned 3/2 1 2 3 12 10

166 Safety related valves Monitored dump valve Emergency stop valve
1 2 3 10 12 Monitored dump valve 1 2 3 12 10 Emergency stop valve 1 2 3 12 10 Soft start valve

167 Special purpose valves
1 2 3 Impulse generator

168 End

169 Symbol Library Vacuum Equipment

170 Vacuum equipment Vacuum generator Vacuum cups Vacuum switch pneumatic
NC NO 1 2 3 2 1 3 Vacuum switch pneumatic

171 Vacuum equipment Vacuum switch electric, normally open and normally closed V dc Analog out Switch out 0 V +V dc supply (brown) Analog out (white) Switch out (black) 0 V (blue) Vacuum transducer with analog and switched outputs npn Load V dc Analog out Switch out 0 V +V dc supply (brown) Analog out (white) Switch out (black) 0 V (blue) Vacuum transducer with analog and switched outputs pnp Load

172 Vacuum equipment Vacuum filter Vacuum silencer Vacuum gauge

173 End

174 End


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