Top-entry check valve having retainer ring

Details Top-entry check valve having retainer ring Top-entry check valve having retainer ring

1993-01-04

1993-08-17

Nilson, Robert G.

Fluid handling

Removable valve head and seat unit

1374546, 1375272, 1375274, 1375278, F16K 1503

Patent

active

052360075

ABSTRACT:
A top-entry check valve having a seat, cage, disc and removable bonnet utilizes a retainer ring to prevent movement of the seat, cage and disc in the downstream direction. An annular shoulder in the valve body prevents movement of the seat, cage and disc in the upstream direction. The disc has a hinge pin which is cradled in hinge pin supports of the cage to hold the disc in place. The retainer ring is secured in the valve body by fitting into a transverse groove formed in the inside surface of the valve body. Removal of the bonnet allows access to the valve chamber for replacement of the seat, cage, disc or retainer ring.

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