Fluid handling – Processes – Cleaning – repairing – or assembling
Patent
1997-11-26
1999-06-01
Walton, George L.
Fluid handling
Processes
Cleaning, repairing, or assembling
137315, 137318, 2940201, 29890121, 277312, 277513, 277515, 228 23, 2281145, 228119, 251214, F16K 4300, F16K 4102
Patent
active
059080442
ABSTRACT:
An apparatus for injecting sealant into the packing chamber of a valve requiring no venting of pressure within the valve. The apparatus which includes an interior valve is attached to the valve body by drilling and tapping a connection or by friction welding. A high pressure packing gland is attached to the apparatus and a drill bit is passed through the combination to complete an opening into the packing chamber. The drill bit is withdrawn past the interior valve, which is closed and then out of the combination. The packing gland is removed and a sealant injection device attached. The interior valve is opened and sealant injected into the packing chamber. The valve is closed, a completion plug installed into the end of the fitting, and a completion cap with a sealing ring is installed over the entire valve and fitting, thereby forming multiple redundant seals.
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Harrison George W.
Kearns John P. (Pat)
Team Inc.
Wallace Bryan C.
Walton George L.
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