Pumper system for in-situ pigging applications

Details Pumper system for in-situ pigging applications Pumper system for in-situ pigging applications

1993-12-02

1995-07-11

Bertsch, Richard A.

Pumps

Successive stages

Parallel stages to or from single stage

417253, F04B 2500

Patent

active

054315450

ABSTRACT:
A pumper system is adapted to enable pumps to be switched between parallel operation, for the high flow conditions normally desired for in-situ pigging operations within a line to be cleaned, and series operation, for the high pressure conditions needed in the event the pigging device becomes obstructed in the line.

REFERENCES:
patent: 2218565 (1970-10-01), Vickers
patent: 2366388 (1975-01-01), Crosby
patent: 2599701 (1952-06-01), Eames
patent: 3244106 (1966-04-01), Guy
patent: 3496960 (1970-02-01), Hughes
patent: 4474539 (1984-10-01), Wolf
patent: 5042521 (1991-08-01), Shiomi

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