Suck back valve

Details Suck back valve Suck back valve

1998-03-10

1999-08-03

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

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

Nozzle cleaner, flusher or drainer

239106, 222571, 251 3002, 251 635, 251331, B05B 1502

Patent

active

059313846

ABSTRACT:
A suck back valve is proposed, comprising a suck back mechanism for sucking a coating liquid inside a fluid passage under a negative pressure action of a third diaphragm displaced by a pilot pressure, an ON/OFF valve for opening and closing the fluid passage under action of the same pilot pressure which is supplied to the suck back mechanism, and a fluid passage switching element for switching the pilot pressure supplied respectively to the suck back mechanism and to the ON/OFF valve.

REFERENCES:
patent: 3895748 (1975-07-01), Klingenberg
patent: 4394945 (1983-07-01), Taylor, Jr.
patent: 4597719 (1986-07-01), Tano
patent: 5134962 (1992-08-01), Amada et al.
patent: 5423482 (1995-06-01), Mueller et al.

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