Top-entry check valve with threaded fasteners

Details Top-entry check valve with threaded fasteners Top-entry check valve with threaded fasteners

1993-08-17

1994-05-03

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

1375278, 137904, F16K 1503

Patent

active

053078357

ABSTRACT:
A top-entry check valve having a seat, cage, disc and removable bonnet utilizes threaded fasteners 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. Removal of the bonnet allows access to the valve chamber for replacement of the seat, cage, disc or threaded fasteners.

REFERENCES:
patent: 483634 (1892-10-01), Prince
patent: 2664264 (1953-12-01), Fennema
patent: 2730119 (1956-01-01), Bredtschneider
patent: 2750955 (1956-06-01), Bredtschneider
patent: 4054153 (1977-10-01), Guyton
patent: 4508139 (1985-04-01), Teumer

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