Differential pressure regulating valve and liquid shut-off valve

Details Differential pressure regulating valve and liquid shut-off valve Differential pressure regulating valve and liquid shut-off valve

1999-01-20

1999-12-21

Michalsky, Gerald A.

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

137 43, 137510, 137587, F16K 2404

Patent

active

060035390

ABSTRACT:
A differential pressure regulating valve is disclosed which improves sealing performance when the valve closes. The differential pressure regulating valve has a diaphragm and a guide. The guide limits the moving direction of a retainer. A projecting part and an engaging hole engage with one another and reduce deformation of the diaphragm by tolerating a relative movement between the diaphragm and the retainer. A liquid shut-off valve device is also disclosed which incorporates the differential pressure regulating valve and has stable operating characteristics.

REFERENCES:
patent: 5529280 (1996-06-01), Satoh et al.
patent: 5598870 (1997-02-01), Nagino
patent: 5640993 (1997-06-01), Kasugai et al.

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