Fluid handling – With repair – tapping – assembly – or disassembly means – With disassembly tool engaging feature
Patent
1991-09-18
1992-11-10
Nilson, Robert G.
Fluid handling
With repair, tapping, assembly, or disassembly means
With disassembly tool engaging feature
1374545, 1375274, 1375278, F16K 1503
Patent
active
051615665
ABSTRACT:
A top-entry check valve having a seat, cage, disc and removable bonnet utilizes threaded engagement of the seat and mating counterbore in the valve body 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. Removal of the bonnet allows access to the valve chamber for replacement of the seat, cage or disc.
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