Suction valve with release timing chamber

Details Suction valve with release timing chamber Suction valve with release timing chamber

1998-07-01

2000-08-15

Freay, Charles G.

Pumps

Expansible chamber type

Having pumping chamber pressure responsive distributor

417433, 137856, 137246, F04B 3910

Patent

active

061026808

ABSTRACT:
In addition to seating on its valve seat during the combined compression and discharge stroke, the suction valve seats on the structure associated with the valve seat which has at least one shallow recessed area. In seating on its valve seat, the suction valve seats on the structure defining the shallow recesses to trap fluid therein. The recesses serve to reduce the area available for adhesion and the trapped fluid pressure provides an opening bias to the suction valve. If necessary, or desired, restricted communication between the compression chamber and the shallow recess can take place to provide a higher pressure in the recess at the time of transition from discharge to suction.

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patent: 5839472 (1998-11-01), Shintoku et al.
patent: B14406590 (1985-11-01), Kessler

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