OPENTECHNICAL PUBLICATION
OT-2026-000000111

Suck-back valve

Published: 2026-09-15T19:02:30.074893Z
Permanent URL: https://opentechnical.org/p/OT-2026-000000111
Categories: Industrial Motion & Power Transmission > Fluid Power

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ABSTRACT

A suck-back valve includes a valve main body formed with a suck-back chamber,
and a suck-back mechanism unit. The suck-back mechanism unit includes a
suck-back piston accommodated in a suck-back cylinder chamber and being
slidable between two dead center positions, and a biasing member biasing the
suck-back piston in a direction to increase the volume of the suck-back
chamber. The suck-back cylinder chamber is divided by the suck-back piston
into a first fluid chamber and a second fluid chamber. The biasing member is
arranged in the first fluid chamber, and a standby position at which the
suck-back piston is positioned when the pressure of a drive fluid in the
second fluid chamber becomes the maximum is set to be away from the dead
center position on the side closer to the suck-back chamber.

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OpenTechnical publication OT-2026-000000111
Published 2026-09-15T19:02:30.074893Z
https://opentechnical.org/p/OT-2026-000000111