Clamp for use with top entry ball valve

Details Clamp for use with top entry ball valve Clamp for use with top entry ball valve

1986-05-02

1987-02-10

Walton, George L.

Fluid handling

With repair, tapping, assembly, or disassembly means

Assembling, disassembling, or removing cartridge type valve

29213R, 1374542, 1374546, 251174, F16K 4300, F16K 5100

Patent

active

046416811

ABSTRACT:
A clamp for use with a top entry type ball valve having a valve casing, a valve body, a seat ring, and a seat ring assembly consisting of another seat ring, a belleville spring and a seat ring holder. The clamp has a pair of clamping plates, a clamping bolt, and a pair of fulcrum bolts. These bolts are screwed through the clamping plates. The lower ends of the clamping plates engage the top of the seat ring and the seat ring holder, respectively. The clamping plates are moved away from each other at the clamping bolt and the distance between them is kept constant at the fulcrum bolts. Thus, the clamping force is applied to the lower ends of the clamping plates.

REFERENCES:
patent: 587092 (1897-07-01), French
patent: 1331305 (1920-02-01), Wilkinson, Jr.
patent: 1437983 (1922-12-01), Magna
patent: 1781698 (1930-11-01), O'Brien
patent: 3170226 (1965-02-01), Larry
patent: 3171429 (1965-03-01), Sturmer et al.
patent: 3305919 (1967-02-01), Pierce
patent: 3771545 (1973-11-01), Allen
patent: 4390039 (1983-06-01), Johnson et al.

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