Three-way inline piggable branch valve

Details Three-way inline piggable branch valve Three-way inline piggable branch valve

2006-05-30

2006-05-30

Fox, John (Department: 3753)

Fluid handling

Systems

Multi-way valve unit

C137S244000

Reexamination Certificate

active

07051760

ABSTRACT:
A multi-port valve device to divert flow of a fluid from a piggable transfer pipe line into a branch pipeline, and simultaneously prevent a line clearing device (known as a pig or cleaning sphere) from flowing with that fluid into the branch pipeline. This device can operate in a least two positions; one that will allow unobstructed flow of a fluid and/or pigs through the device, and at least one other position that will divert flow of a fluid through the device to a branch port and simultaneously present an in-line barrier to stop a pig. In a preferred embodiment, the device resembles a customized “T-port” ball valve where the “branch” flow path is modified to include an integral pig stop.

REFERENCES:
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patent: 3283354 (1966-11-01), Simmons
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patent: 6079074 (2000-06-01), Ellett
OPW Engineered Systems, catalog cut T09.0.0, copyright 1988 Dover Corporation/OPW Division—Tee-Ring Valve (copy attached—2 pgs).
FMC Corporation, catalog cut, FMC-Inline Distribution Ball Valve, Nov. 10, 1990 (copy attached—1 pg).

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