Pressure control valve

Details Pressure control valve Pressure control valve

2006-02-07

2006-02-07

Lee, Kevin (Department: 3753)

Fluid handling

Systems

Flow path with serial valves and/or closures

Reexamination Certificate

active

06994114

ABSTRACT:
A pressure control valve, which has a main valve for control, capable of opening and closing a valve hole by means of a diaphragm, and controls the pressure of a fluid by the agency of the main valve for control, comprises a non-return auxiliary valve located around the main valve for control so as to be coaxial therewith. The non-return auxiliary valve includes a cylindrical portion to be guided by a valve guard body having the valve hole therein and an annular rib extending outward from one end of the cylindrical portion. The rib can engage an auxiliary-valve seat on an outlet-side case.

REFERENCES:
patent: 4630642 (1986-12-01), Detweiler
patent: 4852364 (1989-08-01), Seener et al.
patent: 5251459 (1993-10-01), Grass et al.
patent: 5301504 (1994-04-01), Bertling et al.
patent: 5960818 (1999-10-01), Hecking
patent: 2000-81157 (2000-03-01), None
patent: 2000-230650 (2000-08-01), None
patent: 2001-082835 (2001-03-01), None
European Search Report dated Apr. 28, 2003.

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