Automatic Valves Instrumentation P&ID Typicals and Symbols Process Deliverables Process Design

P&ID symbols for control valve assmbly and actuators

Commonly used P&ID symbols (Piping and Instrumentation Diagram symbols) for control valve actuators.

Note that they may differ slightly from one project to another.

Control valve assembly

Manual (handwheel)
Balanced diaphragm actuator
Motor actuator
Spring actuator
Pilot actuator
Solenoid actuator
Solenoid actuator with manual reset
1 Acting cylinder actuator
2 Acting cylinder actuator
Pilot operated cylinder actuator
Digital actuator
Weight actuator
Key actuator
Electro-hydraulic actoator

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