Fluid handling – With repair – tapping – assembly – or disassembly means – Assembling – disassembling – or removing cartridge type valve
Patent
1989-01-11
1989-08-29
Walton, George L.
Fluid handling
With repair, tapping, assembly, or disassembly means
Assembling, disassembling, or removing cartridge type valve
251214, 251267, 251270, 251330, F16K 4300, F16K 4100
Patent
active
048607843
ABSTRACT:
The non-rising stem valve assembly includes a valve body having an inlet and an outlet and a bonnet member securely attached to the valve body which defines a tubular passageway. A valve stem extends through this tubular passageway and has a lower valve portion axially displaceable relative thereto and positioned between the inlet and outlet. A retaining ring is provided for securing the valve stem against inward movement relative to the bonnet member and an inwardly projecting flange on the bonnet member is provided for securing the valve stem against outward movement relative to the bonnet member. A packing assembly is removably secured to the bonnet member for sealing the valve assembly. An axially displaceable seal is provided in a cavity formed between the flange and the upper surface of the lower valve portion which is axially movable within the cavity by the lower valve portion. This axially displaceable seal forms a temporary seal which may be selectively formed between the valve stem and the bonnet member for temporarily sealing the valve assembly and allowing the packing assembly to be replaced when necessary without decommissioning the valve assembly.
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Crater Timothy G.
Petersen James A.
Engineered Controls International Inc.
Walton George L.
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