Suck back valve

Details Suck back valve Suck back valve

2006-12-05

2006-12-05

Scherbel, David A. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

With cleaning means, drip collecting, waste disposal or soil...

Nozzle cleaner, flusher or drainer

C239S106000, C239S586000, C222S571000, C251S063500

Reexamination Certificate

active

07143956

ABSTRACT:
A suck back valve includes an ON/OFF valve mechanism which opens/closes a fluid passage by displacing a valve member together with a first piston under an action of a pressure fluid supplied into a first cylinder chamber, and a suck back mechanism which has a suction member formed deformably in a flow chamber to suck a pressure fluid contained in the fluid passage by displacing the suction member together with a second piston under an action of the pressure fluid supplied to a second cylinder chamber. The ON/OFF valve mechanism and the suck back mechanism are assembled coaxially and integrally.

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patent: 6-47092 (1994-06-01), None
patent: 8-166075 (1996-06-01), None

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