Fluid handling – Line condition change responsive valves – Pop valves
Patent
1984-02-27
1985-06-04
Weakley, Harold W.
Fluid handling
Line condition change responsive valves
Pop valves
137472, 137494, 1375122, F16K 1720
Patent
active
045208433
ABSTRACT:
The present invention comprises a valve body (24) with an inlet (28) and an outlet (30), and an inlet-closing poppet (32) moveably disposed within a chamber (26) in the valve body, the poppet incorporating a piston head (34) whose face (36) opposes the inlet and from which projects a plug (62) for closing-off the inlet (28) from the remainder of the piston face (36) when the poppet is at its inlet-closing position. A spring (54) urges the poppet towards its inlet-closing position with sufficient force to keep the inlet closed until the fluid reaches a preselected cracking pressure, whereupon the spring allows the poppet to be displaced slightly, exposing the remainder of the piston face to the fluid. The action of the fluid on the piston face is then sufficient to drive the poppet fully back to an annular stop (60) provided within the valve body whose engagement also serves as a partial seal about the periphery (70) of the piston. One or more small channels (58) formed in the piston head direct fluid from the face of the piston to its backside with sufficient pressure drop to assure that the poppet will remain situated against the stop. In the preferred embodiment, these passages lead into the interior of a hollow, reciprocable connector (40) which both lends support to the piston but also serves as a conduit towards the outlet of the valve.
REFERENCES:
patent: 807269 (1905-12-01), Hildebrand
patent: 2320339 (1943-06-01), Buttner
patent: 2845945 (1958-08-01), Mancosi
patent: 3048188 (1962-08-01), Hunter
patent: 3330297 (1967-07-01), Mowbray
patent: 3446238 (1969-05-01), Norstrud
patent: 3856041 (1974-12-01), Cryder
patent: 4432389 (1984-02-01), Jackson
Field Harry B.
Hamann H. Frederick
Rockwell International Corporation
Weakley Harold W.
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