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A dashed line and rectangle marking pressure actuation.
Also known as: Hydraulic pilot symbol, Pressure actuation symbol
In ISO 1219 fluid power diagrams a rectangle fed by a dashed line drawn against a valve denotes pilot actuation: the valve is shifted by fluid pressure from elsewhere in the circuit.
Denotes actuation of the valve by pilot pressure taken from elsewhere in the circuit.
Contexts: Technical drawing
Uses a dashed line, which throughout the standard means a pilot or control connection rather than a main flow path.
Contexts: Technical drawing
A small rectangle at the end of the valve block with a dashed line entering it from the side.