Non-spherical ball valve

Details Non-spherical ball valve Non-spherical ball valve

1978-01-19

1979-04-03

Schwadron, Martin P.

Valves and valve actuation

With means to increase head and seat contact pressure

With positive reduction

251192, 251315, F16K 506

Patent

active

041473264

ABSTRACT:
In a top entry ball valve, a ball having a bore therethrough is provided with chamferred edges around the periphery of the bore at both the inlet and outlet ends. In this manner, due to the geometric configuration of the valve seats, compression sealing takes place only when the valve is closed. When the valve is open, the chamferred edges merely engage the valve seats, thereby allowing easy insertion or removal of the ball/seat assembly.

REFERENCES:
patent: 2373628 (1945-04-01), Gleeson
patent: 2895710 (1959-07-01), Sanctuary
patent: 3045693 (1962-07-01), Allen
patent: 3067978 (1962-12-01), Natho
patent: 3780985 (1973-12-01), Perry

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