Ball valve to relieve cavity pressure

Details Ball valve to relieve cavity pressure Ball valve to relieve cavity pressure

1978-11-29

1980-12-02

Cline, William R.

Valves and valve actuation

Rotary valves

Ball valve

251172, F16K 506

Patent

active

042366917

ABSTRACT:
Disclosed is a ball valve with seats having means to relieve harmful build-up of cavity pressure. The heel of the valve seat has grooves therein allowing cavity pressure to be applied over a portion of the seat surface in a fashion that produces a resultant force in a lip region of the seat. This resultant force causes the lip region of the seat temporarily to move away from the ball and thus vent the cavity pressure to a lower pressure zone.

REFERENCES:
patent: 2945666 (1960-07-01), Freeman et al.
patent: 3146988 (1964-09-01), Riopelle et al.
patent: 3269693 (1966-08-01), Gulick
patent: 3345032 (1967-10-01), Rawstron
patent: 3357679 (1967-12-01), Gulick
patent: 3488033 (1970-01-01), Priese
patent: 3497176 (1970-02-01), Priese
patent: 3503415 (1970-03-01), DeAngelis et al.
patent: 3698687 (1972-10-01), Kitamura
patent: 4124036 (1978-11-01), Rogers
patent: 4157170 (1979-06-01), McClurg

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