Valve with seal ring having edge-welded laminations

Details Valve with seal ring having edge-welded laminations Valve with seal ring having edge-welded laminations

1993-12-06

1995-01-03

Fox, John C.

Valves and valve actuation

Rotary valves

Butterfly

251316, 251363, F16K 122

Patent

active

053779541

ABSTRACT:
Disclosed is a disc valve with a laminated seal ring secured to the housing which forms a leakproof seal with a seating surface on the valve disc. The seal ring is made of two or more metal laminates, the outer peripheral edges of which are cold welded together, by WIG welding or laser welding, for example, to prevent any leakage of fluid pass the opposing, abutting surfaces of the laminations. A bolt-tightened pressure ring presses the laminated seal ring in an axial direction against an axially oriented support face of the housing. An axially open groove in support face is covered by the proximate seal ring lamination and is filled with a graphite gasket to prevent leakage behind the seal ring. Alternatively, the laminated seal ring can be mounted on the disc and the cooperating valve seat is formed on the housing.

REFERENCES:
patent: 3905577 (1975-09-01), Karpinko
patent: 4303249 (1981-12-01), Illy
patent: 4863144 (1989-09-01), Wilson et al.

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