Self-priming system for pumps

Details Self-priming system for pumps Self-priming system for pumps

1979-08-06

1981-03-10

Freeh, William L.

Rotary kinetic fluid motors or pumps

With pump recirculation passage control responsive to...

F01B 2500

Patent

active

042550793

ABSTRACT:
A self-priming pump system having a repriming valve opened in response to variations in fluid movement through a reservoir that includes a flow restriction. A control system is provided that includes a first sensor for sensing pressure within the flow restriction, a second sensor for sensing pressure within a portion of the reservoir spaced from the flow restriction, and a control mechanism for comparing the sensed signals and for opening the repriming valve when the difference between the signals falls to or below a predetermined value.

REFERENCES:
patent: 1206385 (1916-11-01), Sperry
patent: 3370604 (1968-02-01), Napolitano
patent: 3381618 (1968-05-01), Napolitano
patent: 3425436 (1969-02-01), Napolitano
patent: 3434430 (1969-03-01), Bermann et al.
patent: 3741675 (1973-06-01), Porter

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