Regulating the flow capacity of a positive displacement pump by

Details Regulating the flow capacity of a positive displacement pump by Regulating the flow capacity of a positive displacement pump by

1977-05-31

1978-11-28

Croyle, Carlton R.

Pumps

Processes

417298, 417447, F04B 4902

Patent

active

041273621

ABSTRACT:
A piston pump includes a fluid flow control system positioned between the fluid intake duct and the intake aperture of the piston cylinder, the control system including a cylindrical sleeve which is in fluid communication with the intake duct, a valve piston movable in the cylindrical sleeve, a valve stem connected to the intake valve in the piston cylinder extending through both the intake aperture and the valve piston, a first spring positioned between the valve piston and the piston cylinder, a second spring positioned between the piston cylinder and the end of the valve stem, and a fluid by-pass control device for regulating the amount of fluid passing from the intake duct around the valve piston to the intake aperture.

REFERENCES:
patent: 1623489 (1927-04-01), Naab
patent: 2936106 (1960-05-01), Larsson et al.

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