Pipeline leak-testing device

Measuring and testing – With fluid pressure – Leakage

Reexamination Certificate

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Reexamination Certificate

active

06912890

ABSTRACT:
A device for leak-testing a pipeline system, of the type having a test tee fitting in a standpipe, includes a generally circular base plate for engaging an opening of the test tee, a wrench collar for tightening the base plate in the test tee, and a threaded bushing for filling the standpipe with water. A fluid channel passes through the bushing, wrench collar, and base plate, and a one-way valve is disposed within the fluid channel. A water hose is coupled to the bushing for passing water through the one-way valve into the interconnected pipeline system. After leak testing is completed, a sealing cap is secured over the bushing, and the device is left permanently in place after the test is completed.

REFERENCES:
patent: 1720819 (1929-07-01), Cohen
patent: 1873274 (1932-08-01), Boosey
patent: 3941156 (1976-03-01), Metzger
patent: 4168621 (1979-09-01), Kreitenberg
patent: 4281422 (1981-08-01), Simonelli
patent: 4429568 (1984-02-01), Sullivan
patent: 4542642 (1985-09-01), Tagliarino
patent: 4848155 (1989-07-01), Huber
patent: 5076095 (1991-12-01), Erhardt
patent: 5334159 (1994-08-01), Turkel
patent: 5351524 (1994-10-01), Lanham
patent: 2002/0178794 (2002-12-01), Liao
patent: 2003/0037597 (2003-02-01), Tarara

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