Safety relief valve

Details Safety relief valve Safety relief valve

1998-08-31

2000-08-01

Walczak, David J.

Fluid handling

Line condition change responsive valves

Pop valves

137476, F16K 1720

Patent

active

060951834

ABSTRACT:
A spring urged pressure relief valve, having a seat and a valve moved toward and away from the seat, is provided with a valve stem surrounding bushing forming a bushing chamber in combination with a disk on the valve stem. The bushing is provided with an adjustable control port to control fluid pressure assisting the spring closing the valve and controlling blowdown of the valve.

REFERENCES:
patent: 1696452 (1928-12-01), Raymond
patent: 3411530 (1968-11-01), Powell
patent: 3520326 (1970-07-01), Bowen et al.
patent: 3757815 (1973-09-01), Orr

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