Soft seat for safety valve

Details Soft seat for safety valve Soft seat for safety valve

1984-03-05

1986-01-28

Weakley, Harold W.

Fluid handling

Line condition change responsive valves

Pop valves

13751629, 251362, F16K 1720

Patent

active

045664862

ABSTRACT:
In a poppet-type relief valve, including a housing having a spring guide assembly axially biasing a valve toward a seat in its inlet passageway, a soft valve seat member is coaxially disposed in the inlet passageway. The soft seat member includes a rigid surface limiting movement of the spring urged valve toward the inlet passageway and further includes a resilient ring seal positioned adjacent the rigid surface in a manner to be cushion contacted by and form a bubble tight seal with the spring urged valve before the valve contacts the rigid surface.

REFERENCES:
patent: 2588157 (1952-03-01), Olson
patent: 2676782 (1954-04-01), Bostock
patent: 2875978 (1959-03-01), Kmiecik
patent: 3044743 (1962-07-01), Siegel
patent: 3189040 (1965-06-01), Johnson
patent: 3232314 (1966-02-01), Koester
patent: 3255774 (1966-06-01), Gallagher
patent: 3548869 (1970-12-01), Weise
patent: 3741523 (1973-06-01), Scaromucci
patent: 4446886 (1984-05-01), Taylor
patent: 4474208 (1984-10-01), Looney

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