Symbols for Valve Actuators
Symbols for Valve Actuators
The symbols for the valve actuators are drawn next to the end of the valve boxes.
The rule is that each actuator is drawn next to the box that exists when that actuator
is in command. In the drawing above, when the spring has control of the valve, the
flow paths in the left hand box. When the solenoid (the right hand actuator) is in
command, the flow paths in the right hand box exist.
There are a series of standard symbols for actuators. These symbols may be drawn
on either end of the valve without altering their meaning.
Composite Actuators
If two actuator symbols are drawn side by
side, this means that either one can cause the
valve to actuate.
Either the air pilot OR the spring can cause the
valve to move.
Typical Actuator Combinations
2-Position, Double pilot, detented
3-Position, Double pilot, spring centered
Categories:
Pneumatic,
Pneumatics System,
Valve
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