Valve assembly and method

Details Valve assembly and method Valve assembly and method

1980-02-20

1982-02-02

Chambers, A. Michael

Valves and valve actuation

Valve

Removable seat engaging element

13761402, F16L 3728

Patent

active

043135943

ABSTRACT:
A new and improved valve assembly is easily assembled and includes a resilient annular washer. The washer has inner and outer side surfaces dimensioned so that a valve stem presses the inner side surface of the washer radially outwardly to expand the washer into engagement with a hook on a retainer cup. The hook holds the washer against axial displacement relative to the retainer cup under the influence of fluid pressure forces. The retainer cup advantageously engages a shoulder on the valve stem to limit axial compression of the washer.

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patent: 1485508 (1924-03-01), Kiley
patent: 1964249 (1934-06-01), Chase
patent: 2103503 (1937-12-01), White
patent: 2172592 (1939-09-01), Podolsley
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patent: 2823048 (1958-02-01), Hansen
patent: 3085783 (1963-04-01), Pulling
patent: 3144237 (1964-08-01), Zurit et al.
patent: 3352419 (1967-11-01), Entringer et al.
patent: 3460801 (1969-08-01), Norton
patent: 3511475 (1970-05-01), Pfau
patent: 3842614 (1974-10-01), Karcher et al.

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