Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1975-07-25
1977-04-19
Freeh, William L.
Fluid handling
Line condition change responsive valves
Direct response valves
1375145, 417553, F16K 2110, F04B 2104
Patent
active
040182487
ABSTRACT:
A valve is disclosed, which provides its principal utility in oil field pumping operations, having a valve body with an interior quiet chamber. Ports are provided beneath the chamber, shown as holes in the side wall of the valve body. A pin extends downwardly in the quiet chamber, and a valve is provided having a long stem with a hollow bore proportioned for a sliding fit along the aligning pin, the valve terminating in a head having a seating portion. A seat is provided in the lower portion of the valve in open communication with a lower extension. In an alternative embodiment, a second seat is provided at a mid portion of the valve to mate with a chamfered seat in the lower portion of the quiet chamber. In addition, a stainless steel insert is provided on the face of the lower valve seat. The valve is preferably formed of a light weight, non-corrosive, relatively inert moldable plastic, such as that known as delrin. Optionally, a spring may be provided in coaxial biased relationship between the valve head and the upper portion of the body to urge the valve into a closed condition.
REFERENCES:
patent: 1610869 (1926-12-01), Loranger et al.
patent: 2091138 (1937-08-01), Crall
patent: 2094951 (1937-10-01), Rowan
patent: 2318962 (1943-05-01), Parker
patent: 2643090 (1953-06-01), Cluphf
patent: 3054420 (1962-09-01), Williams
patent: 3175758 (1965-03-01), Dirk
patent: 3244112 (1966-04-01), Parkin
patent: 3697199 (1972-10-01), Spears
Dominik Jack E.
Freeh William L.
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