Summary of the pneumatic symbols based on DIN ISO 1219
| Energy conversation |
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| Single acting cylinder, return movement by external force |
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Double acting cylinder with double-ended piston rod and adjustable cushioning at end of stroke and magnetic piston |  |
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| Single acting cylinder, return movement by spring |
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Pneumatic motor with limited range of swivel |  |
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| Double acting cylinder |
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Pressure intensifier for the same fluid |  |
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| Double acting cylinder with double-ended piston rod |  |
Pressure intensifier for air and liquid |  |
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| Double acting cylinder with adjustable cushioning at end of stroke |  |
Compressor |  |
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| Double acting cylinder with double-ended piston rod and adjustable cushioning at end of stroke |  |
Vacuum pump |
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| Double acting cylinder with adjustable cushioning at end of stroke and magnetic piston |  |
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| Directional control valves | ||||
| 2/2-way valve, manually actuated |
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3/2-way valve, normally closed, actuated by roller lever |
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| 2/2-way valve, normally closed, solenoid actuated |
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3/2-way valve, normally opened, actuated by roller lever |
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| 2/2-way valve, normally opened solenoid actuated |
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3/2-way valve, normally closed, actuated by roller lever with idle return |
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| 3/2-way valve, manually actuated |
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3/2-way valve, normally closed, indirect solenoid actuated |
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| 3/2-way valve, actuated by lever |
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3/2-way valve, normally opened, indirect solenoid actuated |
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| 3/2-way valve, actuated by pushbutton |
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5/2-way valve, actuated by lever |
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| 3/2-way valve, actuated by pedal |
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5/2-way valve, actuated by pushbutton |
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| 3/2-way valve, pneumatically actuated, monostable |
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5/2-way valve, actuated by pedal |
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| 3/2-way valve, pneumatically actuated, bistable |
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5/2-way valve, pneumatically actuated, monostable |
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| 5/2-way valve, pneumatically actuated, bistable |
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5/3-way valve, actuated by lever, center position closed |
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| 5/2-way valve, indirect solenoid actuated, monostable |
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5/3-way valve, actuated by lever, center position exhausted |
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| 5/2-way valve, indirect solenoid actuated, bistable |
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5/3-way valve, indirect solenoid actuated, center position closed |
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| 5/3-way valve, indirect solenoid actuated, center position opened |
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| Directional control valves generally and control mechanisms |
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| 2 positions |
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Roller lever with idle return |
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| 3 positions |
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Direct solenoid |
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| Manual control - general |
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Direct application of pressure |
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| Pushbutton |
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Direct application by pressure relief |
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| Lever |
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Indirect application of pressure (pilot) |
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| Pedal |
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Solenoid and pilot valve |
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| Plunger |
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Solenoid and pilot valve with manual override |
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| Spring |
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Detent for 3 positions |
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| Roller lever |
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| Air preparation |
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| Filter |
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Dryer |
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| Water separator |
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Lubricator |
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| Water separator with automatic drain |
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Standard unit (filter pressure regulator with gauge, lubricator), simplified representation |
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| Filter with water separator with automatic drain |
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Pressure regulator |
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| Energy transmision, valves |
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| Working line |
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Gauge |  |
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| Control line |
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Pressure source |
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| Exhaust line |
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One-way flow control valve, adjustable |
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| Flexible pipeline |
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Bidirectional flow control valve, adjustable |
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| Line connection |
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Pressure switch |
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| Quick qoupling with mechanically opened non-return valves, coupled |
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Check valve with spring |
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| Rotary connection with 1 path |
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Piloted check valve |
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| Rotary connection with 2 paths |
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OR disjunction (logical sum) |
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| Silencer |
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AND conjunction (logical product) |
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| Quick exhaust valve |
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Pneumatic capacitor |
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