Fluid pressure control valve

Details Fluid pressure control valve Fluid pressure control valve

1969-04-18

1976-09-28

Weakley, Harold W.

Fluid handling

Line condition change responsive valves

137488, 13750518, 251 612, 251331, 251368, 92 97, 92103, F16K 3112

Patent

active

039825582

ABSTRACT:
A fluid pressure operated control apparatus comprising a casing having an inlet and outlet for the flow of fluid under pressure, a diaphragm mounted in the casing having opposite sides thereof responsive respectively to outlet fluid pressure and a regulating pressure and valve means actuated by the diaphragm in response to pressure variations on its opposite sides for regulating outlet fluid pressure. The diaphragm is comprised of a main layer incompatible with high temperature pure steam and a protective layer. The layers are separable to provide for a contaminant fluid therebetween. The valve trim, including the valve head and stem, a valve stem guide and valve guide bushing having a snap-on valve seat, are insertable into and removable from the casing as an assembly, thereby providing for quick change of the valve trim.

REFERENCES:
patent: 941153 (1909-11-01), Krichbaum
patent: 1494543 (1924-05-01), Hazeltine
patent: 2501957 (1950-03-01), Moore
patent: 2646077 (1953-07-01), Whitney
patent: 2736332 (1956-02-01), Simmons
patent: 3095897 (1963-07-01), Pennstrom
patent: 3130954 (1964-04-01), McFarland
patent: 3336940 (1967-08-01), Fitzpatrick

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