Suck back valve

Details Suck back valve Suck back valve

2005-06-24

2009-12-29

Hwu, Davis (Department: 3752)

Fluid sprinkling, spraying, and diffusing

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

Nozzle cleaner, flusher or drainer

C239S104000

Reexamination Certificate

active

07637440

ABSTRACT:
A suck back valve comprises a suction amount-adjusting mechanism including a screw member which regulates a displacement amount of a second piston integrally displaceable with a second diaphragm in accordance with abutment of a disk-shaped member, a rotary driving section which allows the screw member to move toward or away from the disk-shaped member, and a detecting section which detects a displacement amount of the screw member. Accordingly, it is possible to appropriately adjust the flow rate of the pressure fluid to be sucked under the negative pressure action of the second diaphragm.

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Pending U.S. Appl. No. 11/167,255, filed Jun. 28, 2005, by Yoshihiro Fukano et al.

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