Valves and valve actuation – Fluid actuated or retarded – Piston type expansible chamber reciprocating valve actuator
Patent
1980-08-04
1982-10-26
Nilson, Robert G.
Valves and valve actuation
Fluid actuated or retarded
Piston type expansible chamber reciprocating valve actuator
13732901, 13732903, 13732906, 137509, 175 38, 251121, 251210, F16K 31122
Patent
active
043557848
ABSTRACT:
A back pressure control choke operates to automatically control and maintain a desired back pressure on the fluid passing through the choke. The choke housing has an inlet channel which intersects with an axial bore, part of which bore constitutes the discharge channel. An annular choke seat concentrically arranged in the discharge channel of the axial bore is adapted to receive an annular choke element. The choke element is affixed to a shuttle which is mounted on a fixed mandrel extending into the axial bore of the choke housing. The shuttle is dynamically sealed against the housing and mandrel such that a closed chamber is created in that portion of the axial bore opposite the discharge channel. The shuttle element is constructed to be fluid balanced such that it will move to achieve an equilibrium of pressure on its forward and rear surfaces. By introducing a desired pressure in the closed chamber, the shuttle and attached choke element will move and throttle the fluid flowing through the choke to automatically maintain a back pressure equal to the pressure in the closed chamber.
REFERENCES:
patent: 1094267 (1914-04-01), Sullivan
patent: 2891570 (1959-06-01), Krupp
patent: 2962045 (1960-11-01), Christensen
patent: 2989971 (1961-06-01), Valentine
patent: 3026896 (1962-03-01), Bosworth
patent: 3054422 (1962-09-01), Napolitano
patent: 3059894 (1962-10-01), Knecht
patent: 3443643 (1969-05-01), Jones
patent: 3470972 (1969-10-01), Dower
patent: 3778022 (1973-12-01), Yauneridge
patent: 3955796 (1976-05-01), Grove
patent: 4044834 (1977-08-01), Perkins
patent: 4167262 (1979-09-01), Lemmon
patent: 4190073 (1980-02-01), Claycomb
patent: 4257442 (1981-03-01), Claycomb
Nilson Robert G.
Warren Automatic Tool Company
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