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A zigzag spring returning a valve to its rest position.
Also known as: Return spring symbol, Spring offset symbol
In ISO 1219 fluid power diagrams a zigzag drawn against the end of a valve denotes a spring returning it to its rest position when the actuating force is removed.
Returns the valve to its rest position when the actuating force is removed.
Contexts: Technical drawing
Determines which square of the valve block is the rest position, which is the square the external port lines are drawn against.
Contexts: Technical drawing
A zigzag line drawn against the end of a valve block, in the conventional shape of a coil spring.