Circulator pump check valve

Details Circulator pump check valve Circulator pump check valve

1995-07-31

1997-09-09

Gluck, Richard E.

Pumps

Motor driven

Including means utilizing pump fluid for augmenting cooling,...

F04B 3906

Patent

active

056649398

ABSTRACT:
An wet-rotor hydronic heating/cooling circulator in which a check valve is positioned at the inlet eye of the pump impeller, where it can easily be serviced by removing the circulator motor and impeller. The check valve is preferably in the form of a valve subassembly that is removably inserted into an opening at the eye.

REFERENCES:
patent: 40723 (1863-11-01), Gilson
patent: 2925041 (1960-02-01), Sigmund
patent: 3135220 (1964-06-01), Haynes
patent: 3225698 (1965-12-01), Spisiak
patent: 3276385 (1966-10-01), Marlow
patent: 3416454 (1968-12-01), Dowdican
patent: 3664759 (1972-05-01), Biheller
patent: 4324526 (1982-04-01), Berchtold et al.
patent: 4773822 (1988-09-01), Jensen et al.
patent: 5011372 (1991-04-01), Nigrelli et al.
patent: 5201633 (1993-04-01), Peu

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