Choke

Details Choke Choke

1978-06-14

1980-03-25

Rosenthal, Arnold

Valves and valve actuation

Fluid actuated or retarded

Fluid and non-fluid actuators

74625, 74527, 744248VA, F16K 31122, F16K 3144

Patent

active

041947185

ABSTRACT:
A choke suitable for use in the wellhead of a production well including a body having an inlet, an outlet and a seat, a valve member or gate adapted to move relative to said seat to restrict flow therethrough, a pressure responsive operator connected to move the gate with respect to the seat, a manual operator connected to said pressure responsive operator, means releasably connecting said manual operator to said gate to manually move said gate and for releasing said manual operator from said gate to allou said pressure responsive operator to move said gate and a control on the exterior of said manual operator connected to said releasable connecting means.

REFERENCES:
patent: 2644485 (1953-07-01), Schwendner
patent: 2908477 (1959-10-01), Buri
patent: 3103133 (1963-09-01), Paul, Jr.
patent: 3378224 (1968-04-01), Boyle
patent: 3417960 (1968-12-01), Stehlin

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