Fluid check valve with replaceable valve seat and flapper assemb

Details Fluid check valve with replaceable valve seat and flapper assemb Fluid check valve with replaceable valve seat and flapper assemb

1993-02-19

1994-06-07

Rivell, John

Fluid handling

Removable valve head and seat unit

1375121, 137515, 137527, F16K 1503

Patent

active

053180631

ABSTRACT:
A fluid check valve of the two flapper variety which has replaceable seat flapper assembly. The assembly comprises a tubular ring having a seating area on the surface of one end and a reduced diameter portion on the other end. A pair of pin keepers are attached to opposite sides of the seat ring and the flappers are pivotably attached to a pin that passes through elongate holes in the keepers. The seat ring is a sliding fit in the bore of the valve body and abuts against an annular rib in the valve body bore. The reduced diameter portion of the seat ring extends through the annular rib. A retaining ring is attached to the reduced diameter portion by threaded engagement, bolts, or other means and tightened until it abuts against the other side of the annular rib thus holding the seat ring in tight assembly in the valve bore against the rib.

REFERENCES:
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patent: 3601364 (1971-08-01), Scaramucci
patent: 3678958 (1972-07-01), Satterwhite et al.
patent: 3771764 (1973-11-01), Miyauchi
patent: 3815869 (1974-06-01), Smith
patent: 3902697 (1975-09-01), Robinson
patent: 4257444 (1981-03-01), Ogle, Jr. et al.
patent: 4457333 (1984-07-01), Sharp
patent: 4465260 (1984-08-01), Conley et al.
patent: 4492249 (1985-01-01), Arino et al.
patent: 4694853 (1987-09-01), Goodwin
patent: 4774981 (1988-10-01), Mizusawa
patent: 4896695 (1990-01-01), Pysh
patent: 4977926 (1990-12-01), Hocking

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