F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/64
F16K 17/06 (2006.01) F16K 1/36 (2006.01) F16K 17/04 (2006.01) F16K 47/02 (2006.01)
Patent
CA 1306926
IMPACT RESISTANT PRESSURE RELIEF VALVE ABSTRACT An impact resistant pressure operated relief valve comprising a valve body having an exhaust port and a nozzle assembly having a flow passage which terminates in an opening surrounded by an annular valve seat. A disc holder in the valve body is slidably disposed between a closed position abuting the valve seat, thus closing the nozzle passage and a second position in which the disc holder is displaced from the valve seat, thus opening the valve port to the nozzle passage. A compression spring forces the disc holder to the normally closed position. The lower portion of the disc holder is provided with a valve disc having a facing surface which is adapted to contact the valve seat in the closed position. The invention further comprises compressible shock absorber means interposed between the disc and the disc holder. The shock absorber functions to lessen the shock forces involved when the valve disc impacts upon the valve seat at closing. This permits the use of a narrow valve seat which provides a high unit load on between the disc and the valve seat and achieves a high degree of seat tightness.
588004
Dresser Industries Inc.
Kirby Eades Gale Baker
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