Fluid handling – Processes – Cleaning – repairing – or assembling
Patent
1996-12-30
1998-04-21
Walton, George L.
Fluid handling
Processes
Cleaning, repairing, or assembling
73 46, 73 491, 73 495, 73 498, 137318, 138 90, F16K 4300, G01M 304, F16L 5511
Patent
active
057408300
ABSTRACT:
A method and apparatus for testing a plumbing system in a more dependable and cost-effective manner. During the rough-in plumbing phase of construction, the drain pipe leading from the plumbing system in a building to the city sewer main or main sewer line is positively sealed off by a test cap welded in the pipe at the location of the clean-out. Access to the test cap is maintained through the clean-out. Pressurizing the rough-in plumbing to test the same can then proceed knowing that if any leaks occur, they are in the branch plumbing on the building side of the test cap, and not at or in the test cap. Following successful completion of the initial test, the top-out plumbing job is completed, leaving the test cap welded in the clean-out or drain pipe. After the roof vents are in, the second test of the plumbing system is made, again knowing that if the system shows any leaks, they are the result of a failure in the plumbing work and not a failure of the test cap. After the plumbing system has passed final test and inspection, a special tool or apparatus in accordance with the present invention is inserted down the clean-out to penetrate and ream-out the test cap, so that the drain pipe is opened and provides a passageway through which the waste can flow to the sewer line.
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Costello Leo F.
Walton George L.
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