Valve having convex sealing surface and concave seating surface

Details Valve having convex sealing surface and concave seating surface Valve having convex sealing surface and concave seating surface

1992-05-05

1993-07-13

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137542, 137902, F16K 1506

Patent

active

052264459

ABSTRACT:
A valve includes a seat surrounding an orifice having a concave seating surface and a plug having an annular sealing surface for sealingly contacting the seat. The sealing surface is convex and creates a convex discontinuity in an axially-extending, cross-sectional profile of the plug. The sealing surface retains approximately the same amount of contact area with the seating surface when the plug is misaligned or tilted with respect to the seat as when aligned.

REFERENCES:
patent: 1733180 (1929-10-01), Biedermann
patent: 1940999 (1933-12-01), Ferlin
patent: 2025296 (1935-12-01), McIntyre
patent: 2318773 (1943-05-01), Goetz
patent: 4860995 (1989-08-01), Rogers
patent: 5073096 (1991-12-01), King
patent: 5088521 (1992-02-01), Johnson

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