Check valve having replaceable valve assembly

Details Check valve having replaceable valve assembly Check valve having replaceable valve assembly

1982-09-30

1985-08-06

Weakley, Harold W.

Fluid handling

Removable valve head and seat unit

1374546, 1375157, 13751627, F16K 2500

Patent

active

045329583

ABSTRACT:
A check valve having improved sealing qualities and provided in the form of a replaceable assembly of a valve member and valve seat to avoid the need to replace the valve housing. The sealing surfaces are defined by obliquely directed, outwardly tapering sealing members which are capable of deflection to provide increased sealing area as the pressure on the downstream side of the assembly is increased. The valve assembly includes an annular base having an inwardly directed, tapered valve seat and an annular sleeve secured thereto in coaxial relationship. A spider member is secured to the other end of the sleeve and includes inwardly directed radial means terminating in a hub having a cylindrical bore to support the stem of the valve member. A spring is provided to bias the valve member against the valve seat.

REFERENCES:
patent: 2750958 (1956-06-01), Baker
patent: 2845085 (1958-07-01), Robbins
patent: 2858838 (1958-11-01), Scaramucci
patent: 2870784 (1959-01-01), Walls
patent: 2900999 (1959-08-01), Courtot
patent: 3054422 (1962-09-01), Napolitano
patent: 3780758 (1973-12-01), DeVries
patent: 3970563 (1976-07-01), Codo
patent: 4039003 (1977-08-01), Cheek

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