Valve

Details Valve Valve

1981-03-09

1982-03-16

Spiegel, H. Jay

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

251315, F16K 2500

Patent

active

043197345

ABSTRACT:
A ball valve having a cylinder slidable in a port. The cylinder has a lip which is pressed, by a spring, against a spherical surface surrounding a passage through the ball. A sleeve is slidable to a position over the cylinder, the sleeve having an annular groove adjacent the lip and a first seal therein. The sleeve has a portion contiguous to the cylinder at the end thereof opposite the lip, a second seal being provided between the housing and the sleeve portion. If C is the inside diameter of the lip, if B is the outside diameter of the length of the cylinder having the groove, if A is the outside diameter of the sleeve portion, if A>C, and if C>B, the valve will seal for flow in either direction or for zero flow all at, say, 3000 psi.

REFERENCES:
patent: 3118649 (1964-01-01), Allen et al.
patent: 3164362 (1965-01-01), Lavigueur
patent: 3269691 (1966-08-01), Meima et al.
patent: 3521855 (1970-07-01), Jensen
patent: 3916940 (1975-11-01), Allen
patent: 4071220 (1978-01-01), Iino
patent: 4137936 (1979-02-01), Sekimoto

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