Pressure balanced cartridge choke valve

Details Pressure balanced cartridge choke valve Pressure balanced cartridge choke valve

1989-12-15

1990-11-20

Cohan, Alan

Fluid handling

Convertible

Unit orientable in a single location between plural positions

1374542, 1376253, 251282, F16K 1107

Patent

active

049710990

ABSTRACT:
An improved pressure balanced choke valve with a reversible cage style trim suitable for installation in production flowlines where it may be desired to later reverse the flow direction and use the well for water injection. The valve body has end connections machined thereon and a central bore for sealingly receiving a reversible cartridge assembly containing the cage style trim. The cartridge assembly is sealed against the valve body cavity by metal-to-metal seals and is easily removed for flow reversal by removal of a simple retainer cap. The cartridge assembly uses an inner sleeve movable within a cage type trim to control the flow. The cartridge is surmounted by a bonnet assembly utilizing a handwheel operated traveling nut assembly to control movement of the inner sleeve.

REFERENCES:
patent: 2918087 (1959-12-01), Curran
patent: 3123091 (1964-03-01), Elsey
patent: 3348570 (1967-10-01), Nealy
patent: 3730479 (1973-05-01), Baumann
patent: 4384592 (1983-05-01), Ng
patent: 4834133 (1989-05-01), LaCoste

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