Common Solenoid Valve and other Pneumatic symbols.

a detailed view of pneumatic circuit symbols and their meaning. Valve symbols including solenoid valve symbols are those that are in common use. Solenoid Valve Symbols:

0KW4bWgN5AxSOByQcxDiWIN82GgFwY=  2/2 valve - 2 ports 2 positions

g3+P5U9PmAwA=  3/2 valve - 3 ports 2 positions

0Q8G 4/2 valve - 4 ports 2 positions

fV5Lz4+AlvxE=  5/2 valve - 5 ports 2 positions

QfKt3KWohuNMpaIHXDt9jP+SQ==  5/3 valve - 5 ports 3 positions

wTg2xrJqNGdPOMEgHR2wrUsx+S1KgXhISnqA4AtaiRzirqU6ACAYwqq7PSeLDCKcXA63Q2hTPjlAA== Accumulator

LgA=  Air Dryer

4+ATvEfSqrfbhySdMAWsRHQKi7fBhkoWSTIE60j+j8BfNPgn5AznXfjTJY6XbhA5L3M2ZZF14PZYthINLe8LTqPkWbK+0eHtsQbsHBQ0nRY3EFDct2BOTwmEmAGC8ktOxeR4mwXv1DazPxjTr9DhPDsO6TNzP9+iwjh7Z5Ecb3rUdPZUZF4gx0NJNMdbQk3nxYtzXkHeAw0uQHQTDS8dHhsIU451wxUmPnoA349AA== Air Motor - flow one direction
AwA=  Air motor - flow two directions

7AiXIN9Ux4+IG9TPOfGltZBzsuH8sGxBdlbcpYew8AAA=  Check Valve - spring closed

LcXlYfFgN52WGTFS8JNgAIY4A9CDclnU7Hn1tjpDiiDnTYIlV4iAH8tvv9PAoHD0vog0Yg+BxHA6QgjTHrzcOjwU0EWtUTrQKHA7BgOYDEMhA4mS0zgDhRsaBBkUiLa49Zk4ygEdkRJwgLNH3WK3ocR1TbFFY0uuAA3BcVg== Compressor ZQE=   Cylinder - Spring return LAgA=  Cylinder - Double Acting with double rod  JAKIQFlW66Q6BiSEydo0fzer4DyrbtYwWZtGoCwflEFUhwBk4ZisWSYL  Cylinder - Double acting with single fixed cushion XR5rIXUlLqKcm+1Jk6HpdFUd1NzT5I6XUnDoaJ8JfXBxGFT4wIpm60PgIGSfAWB7X+BkJHE8f9dAA==  Cylinder - Double acting with two adjustable cushions
bMKAA== Differential pressure s14L0E7urFTHglJxgQOLQ8GoXD8U4ASeCjWIgInt7wo83M4zBEhq3tDHWcbNgKXLGb16AA== Direction of flow 1mdljmGvzeeZeB6nRzDxxNN24pft8Xl61J6upwSEtBU9xkpvRNIYptBLPE2n9sAU4b+CAAA= Exhaust Line - control line

 6d38ugoO8XAQA= Filters and Regulators

GEkhI1TL0lwRYCQP5lrSlOFRzChVNzsef5yioDIFviy4dhhBV0idbjm0U1K1VZp3FQkV4y3Ydq0rtE63ldKqra6ioWLBt5ULdNILXDE= Filter with automatic drain

jvCTUUgAAA Filter with manual drain

CZhq7KLGYJaqkOlezCdJKem+rnd7RTx3MucCbHtVR7FjeTeWrVGAAAAA= Fixed restriction
8y1z+Gq5nXEoUYcSZfgScy2Yb8pgq0Xnv1vJSeeUeEXXqLakj8knvchNwAAA=  Flexible hose line

bGyMUWwIqgAAAAA  Flow control valve

 K6TOVnxeShQ5iAVhQEAAAAAA== Flow Gauge

 mZEju6pjHi190K0ift2Hu37fEX05DizCPMF4LAAAAA=  Lever

FVwXMMUtolgsklNKRCLZkkAJAXgIleACrXmqRksCUj44u0qwyzUAnsIuQnU6P8H1Cj Line Connected
9Y5PZ9bUYAA== Lines crossing

 6nHsrdAgEvYaDt5RJ9QiHoLgpeohAIhUAoBEIhEAqBUAiEQiAUAqFQ6A9KAA==  Lubricator

hsKDKHqNVkOa1AQA= Muscular Control

 owj+j8BuGghGeYlRHkHmp4mRiB7gH+pzAsi0vVIhmn3BQ==One bypass flow valve and two closed ports  J4CNhiTrVnDyZ2ppRKVfSLJu4OwV One flow path

7jAW5i23aV+3MgtRkNlFHMl4CEJ+1K+RJQwK3+2SQBEf2fAPtCj1hNDeBpbupYaGml2RHcwRrswRwsQQ0aUGgp4gOeuWbaCAbwACdwBmuwB3PwivhAYy4VWiKZZvavIlbvmwY=  Pedal or treadle

 hdEiZ42AA==  Pilot pressure - external

 7jAWwi23ZyqXKQgBO0ICRKQ8qTQJl5XSLVEf2fAJgePDhkkP8WYi4dSmSSplYsCgplYymbQtkcyFrIKhmFCubSDkD2Kw4eHKwB  Pilot pressure - Internal
eSI4taIlndkaJhpGqKTlU0rKDuMmppRdoS2x27GDvcH7sXXEx4d2xLqKUVdZfRsIKmKqqaqGgYyeqOLGqJRAn9XQ== Plugged Port
gE= Plunger or Position Indicator
deaL3UeGswBWMw8s6FFzMvyQiXy0nx8nSBJCU1cmPhnUeeJmAK1iC2Xug9DeAI1mAFGvDnAQA=  Pneumatic
YNuuOwncWuu80jsmLveE28mtHSR0j8AO+ay9V8Abv3AvOARALw74UisNGC6QpIxSKJhHuF+SUpofALwykgCeAGO5Em6Jl9SkkCyv7rGp49HnfNzvshBETFsMxj6Cxrcp67xqHMHH1eqgx2ozDCpu7eqxMGpko9QeT62YAA= Pressure Actuated Switch

xQA  Pressure Gauge

 Dqs7DzM83mnssMJI8JxkhXkfBL1XVmpnfS7VUL699gUwA Pressure Regulator - Non Relieving

wtUAg== Pressure Regulator - Self Relieving

 av9U2W4CYJJTJfHVXGI0R0ZLDo8ruY93X1N0lVH8UPCSyROEeyq6ajH3e5HDuq7sYQ6pJcWvaUaK619gv45h8QpGoG9hPjvZyC76gWrf5jcTKUGsp41Estky79QZBFkY1G11hRr1tcoAAAA==  Push Button

 AvxJOIByJ6o7gmgSC7FNDOKYqEXulwI= Quick Connect Coupling

  yeA129legEe+I8oDCKyE1DsFpnIkO1OLtRujg3sp2DfjQ1ntyiE2i+m2Y1AISI7KQz7MSHZ7jX9ZjI936kBAA== Roller

 93OQ0QydmMpW5Na+fIsWJ1oCEymguktChHTsvU8VTWZzNS7tbGaue4AKvX62BIcx2MeNIZ0CKZBmiPPU1lwqvJ+srMzBP2CJCCXhPhqUS8qKU8JzmvLfic Roller One Way

N4IElYofSGql8mX8U Shuttle Valve

 Z8AGZ79EQFulkYOUspdHh9BI3BEdbrcDQs7eplJDHxtAkl8YwQLq09fJ6WsrjAsw2jEHHGkAW6WJPiHAA== Silencer

 1PbAkh0BBAVBgWiAlYBm9vqVRy1AuBOBRYYSzrUBBtqipvGDHC1OX3MRNCXwutXn3GHWNChgKvO3cDNC4wL2AX0PvSS7TJ08HWqLwA= Solenoid with pilot and manual over ride

JwCmZHFIkP+WSjr06GSHJsnOILsg2xWbYlassko6APgzZHGwBg== Solenoid - Single Winding

 jdCWsF+x7Rgly41pXc4cOlNuoeFuLsXuZMZ6VGSTQQ+JZXq4ZHq4hXMtUAVPwJTqogxlcSZCqJKAUVdYCxNa+jwvw== Spring
 JwChhWRVe1go2QmvAYCvCa8BFv4iJKta9gA= Two Closed Ports 38HpN54oAA== Two distinct positions and one transitory position AuBPH4ioJKK8kdYYLFzAYcR5uIALt83QAHE6Q602giFqteTMELeWJEfwJhxYCF4qS11Zz5PtLFmhZFUdkJkalfpEYclanqxXI94zN8tCSC8yj7so2QEs3FokUzdmARZqdRAZMO8ORFQSUd7IfwQA  Two flow paths  BOB1iq7z2QgMIfwHUmHgUEWDug1lHXkfTFUNBTIxrCPvcb5EsZShhCEcCgyhj6XrZ3ux Two flow paths with cross connection
 iIA Vacuum Pump
 kpNQLuBMqFO4FE4OoAp7G5A7L+3AzJyZRaDzuhHdtFmn5eABAA== Variable Restriction
 XgA Working Line    
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The following symbols are generally in accordance with BS1553-1 and BS5070Different Line Types.

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Symbols for Valves

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Symbols for Valve Actuators

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Symbols for Instruments

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Symbols for Flow Instruments

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Instrument Identifiers

Measured Variable
Type of Conditioner
Type of Component
F = Flow
R = Recorder
T = Transmitter
L = Level
I = Indicator
M = Modifier
P = Pressure
C = Controller
E = Element
Q = Quantity
A = Alarm
 
T = Temperature
  Connexion Solenoid Valve symbols from the UK's premier solenoid valve suppliers


Symbols for Process Equipment

The levels of detail for process equipment relates to the schematic type produced. A process flow sheet will only show basic levels of technical information sufficient to highlight essential process flow paths. An engineering line diagram of P and ID will show a lot more detailed comprehensive information and technical detail.

Equipment Process Plant -1

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Equipment Process Plant - 2

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Line tags and equipment identification.

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Reading Pneumatic Schematic Symbols

 Valve Symbol

5/2 Valve has 5 ports and 2 possible conditions

1.) B is pressurized and A is exhausted.
2.) A is pressurized and B is exhausted.

When the solenoid is NOT energised the B port is pressurized. The spring symbol defines the valve position at rest.

The Block

Solenoid Drawing
The block symbolizes the possible valve functions or positions. Example: A 5/2 valve schematic will be illustrated with 2 blocks describing two valve functions or positions/ A 5/3 valve schematic will show three blocks describing 3 possible valve functions.
The Actuator.
Valve Drawing Symbol
(Solenoid) Symbol
Pneumatic valves can be operated in several ways. Hand operated (including levers and push and or push pull buttons) : Air piloted (operated remotely by pneumatic signals) : Solenoid (directly actuated with electronic signals)
Exhaust Port Symbol
Valve CAD Symbol
The inverted triangle symbol Denotes an exhaust port. The letters EA indicate this is the exhaust port for the A circuit. Ebin turn indicated the exhaust port for the B circuit.
The Arrows
SV Symbol
The arrow symbols illustrate the direction of gasses flowing into and out of the valve ports. Gas pressure is supplied from port P. Depending on which of the valve blocks is in function, the gas is directed to port A or B as shown by the arrows.
The return spring
Solenoid Drawing
The spring symbol defines the “at Rest” position of the solenoid valve. The spring “pushes” from the side it is drawn on and places the right side block diagram of the valve in function.
The T Symbol
Solenoid Drawing
This symbol indicates that a port is closed and is neither passing or exhausting gas.
Solenoid Drawing
Pressure of air supply symbol
This symbol indicates the air supply port, in addition to this the letter P or the number 1 also indicated the air supply port.

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