Safety relief valve

Details Safety relief valve Safety relief valve

1986-06-16

1987-11-24

Weakley, Harold W.

Fluid handling

Line condition change responsive valves

Pop valves

137477, 137478, F16K 1720

Patent

active

047081643

ABSTRACT:
An improved safety relief valve that includes an adjusting ring located on the valve seat member. The adjusting ring has one end located to provide an orifice which will control the area governing the rate of closure or "blow down" of the valve and a much larger peripheral surface which cooperates with a valve member carrier to provide an orifice that governs the force applied to the valve carrier and valve member to lift the valve which has been previously "cracked."

REFERENCES:
patent: 630826 (1899-08-01), Downs
patent: 1231330 (1917-06-01), Clark
patent: 1233752 (1917-07-01), Clark
patent: 1696452 (1928-12-01), Raymond
patent: 2261461 (1941-11-01), Falls
patent: 2821208 (1958-06-01), Farris
patent: 3354900 (1967-11-01), Ferrill
patent: 3406712 (1968-10-01), Weise
patent: 3572372 (1971-03-01), Moore
patent: 3897802 (1979-08-01), Bass

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