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)
Diaphragm actuator {adinserter 1}
Balanced diaphragm actuator
Motor actuator {adinserter 1}
Spring actuator
Pilot actuator
Solenoid actuator
Solenoid actuator with manual reset {adinserter 1}
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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