High pressure fluid regulator

Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface

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Details

251331, F16K 1608

Patent

active

051078872

ABSTRACT:
A fluid pressure regulator provides features which enable an extended regulator life in high pressure service. Dual flexible diaphragms provide chemical resistance in contact with the working fluid and abrasion and fatigue resistance in contact with a backup plate and piston assembly. The backup plate has a bore which is sufficiently long and close fitting with the piston so that axial alignment is assured and there is minimal tendency for the piston to become cocked within the bore. Provision is also made for preventing fretting corrosion between the piston and the backup plate by coating at least one of the surfaces, if necessary, to assure that dissimilar metals only are in contact in that couple. Seals between the regulator housing body and the diaphragm and between the valve stem and diaphragm may be provided by resilient seal rings or by annular protrusions integrally formed on one or both of the diaphragms.

REFERENCES:
patent: 1712697 (1929-05-01), Frankenberg
patent: 1946188 (1934-02-01), Birch
patent: 3045691 (1962-07-01), Young
patent: 3782858 (1974-01-01), Deters
patent: 3812877 (1974-05-01), Fleishhacker et al.
patent: 3982559 (1976-09-01), Ochs
patent: 4246931 (1981-01-01), O'Connor
patent: 4776368 (1988-10-01), Drozd
patent: 4887639 (1989-12-01), Lewis et al.

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