Rapid seating check valve

Details Rapid seating check valve Rapid seating check valve

1975-02-24

1976-03-23

Schwadron, Martin P.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

137540, 137542, F16K 1704, F16K 1502

Patent

active

039453960

ABSTRACT:
A check valve has a body with a seat therein and a valve plug movable toward the seat to closed position and away from the seat to open position. The valve plug has a forward face facing toward the seat and body inlet and a rear face facing away from the seat and toward the body outlet. The plug, at its rear face, has a stem of smaller diameter than the rear face so that an annular area of the rear face of the plug is exposed rearwardly toward the body inlet. The stem has fins thereon of a shape to impede the return flow of fluid relative to the stem in a direction toward the seat and thereby assist in rapid closure of the valve. The rear face of the plug is concave rearwardly and slopes inwardly from its outer periphery toward its axis at a very slight angle to further assist in rapid closure, while reducing outward radial components of flow of return fluid.

REFERENCES:
patent: 1844613 (1932-02-01), Thompson
patent: 1930040 (1933-10-01), Crowley
patent: 2597057 (1952-05-01), Bergquist
patent: 2672881 (1954-03-01), Jay et al.
patent: 2755816 (1956-07-01), Collins
patent: 2797705 (1957-07-01), Frantz
patent: 3756273 (1973-09-01), Hengesbach
patent: 3782410 (1974-01-01), Steuby

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