Flow trim for choke

Details Flow trim for choke Flow trim for choke

1994-03-25

1995-07-11

Fox, John C.

Fluid handling

Systems

Multi-way valve unit

251210, F16K 334

Patent

active

054311888

ABSTRACT:
The flow trim has inner and outer, spaced apart, tubular cylindrical, coextensive, ported walls which project across the inlet of the choke. A tubular throttling collar may be advanced longitudinally through the annular space between the ported walls, to vary the flow area of the ports. The arrangement enables staging of the pressure drop in increments through the ports of the choke. This reduces cavitation.

REFERENCES:
patent: 4041982 (1977-08-01), Lindner
patent: 4540022 (1985-09-01), Cove
patent: 4569370 (1986-02-01), Witt

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