Blow down ring locking device

Details Blow down ring locking device Blow down ring locking device

1981-06-24

1983-12-06

Weakley, Harold W.

Fluid handling

Line condition change responsive valves

Pop valves

137382, 137385, F16K 1720

Patent

active

044187149

ABSTRACT:
An improved pressure relief valve with an improved device for securing the blowdown ring of the valve without compromising its pressure integrity. These pressure relief valves include a nozzle extending into the interior of the valve and communicating with the pressure vessel and a blowdown ring which is threaded to the nozzle. Atop the nozzle's opening is a disc which is spring biased into engagement with the nozzle to seal same. The device includes an annular collar surrounding at least a portion of the blowdown ring and the nozzle, a first locking member secures the blowdown ring to the collar and a second locking member secures the collar to the nozzle. The device may utilize the wire seal required by many safety codes.

REFERENCES:
patent: 524208 (1894-08-01), Kunkle
patent: 2880751 (1959-04-01), Tobis
patent: 3572372 (1971-03-01), Moore
patent: 4289339 (1981-09-01), Hansen
patent: 4304424 (1981-12-01), Hansen
patent: 4318639 (1982-03-01), Schosek

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