Pipe joints or couplings – Having plural independent paths – For concentric tubes or pipes
Patent
1998-03-25
1999-07-27
Reichard, Lynne A.
Pipe joints or couplings
Having plural independent paths
For concentric tubes or pipes
28513311, F16L 4100
Patent
active
059277629
ABSTRACT:
In a pipeline system having a plurality of pipe segments joining a fluid supply tank to a fluid dispenser, the invention includes a pipe coupling assembly for use on at least one terminal end of a fluid transfer pipe, where the transfer pipe has an inner tubular member for transferring fluid and an outer tubular member and an interstitial space therebetween. The coupling assembly comprises a transition coupling for attachment to the pipe segment to provide a first path for the fluid in the inner tubular member and a second path for the interstitial space. The coupling assembly further comprises a transition fitting for attachment to the transition coupling to provide separate paths for the transfer fluid and the interstitial space, where the interstitial space provides a means for performing leak detection or fitting integrity tests during application of either a vacuum condition or pressurized gas input via such selective access.
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Binda Greg
Environ Products Inc.
Reichard Lynne A.
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