Quiet check valve

Details Quiet check valve Quiet check valve

1992-07-31

1994-11-29

Gluck, Richard E.

Pumps

Expansible chamber type

Plural pumping chambers

13753311, F04B 2102

Patent

active

053684540

ABSTRACT:
This invention represents an improvement in a standard four ball reciprocating piston pump. Such pumps utilize a greatly enlarged seat to provide hydraulic cushioning of the check balls in order to greatly quiet operation. A seat width on the order of 6% of the ball's circumference is preferred. Closely confining the ball to the axis of the seat helps efficient and quiet operation.

REFERENCES:
patent: 1380415 (1921-06-01), Putnam
patent: 1867585 (1932-07-01), Moore
patent: 2899974 (1959-08-01), Gratzmuller
patent: 4601305 (1986-07-01), Nordskog
patent: 4633681 (1987-01-01), Webber
patent: 4775303 (1988-10-01), Liska
"The High-Flo.sup.R series of Pumps", Instructions-Parts List, Copyright 1984 Graco, Inc. Form No. 307-678, General Information.

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