Pipes and tubular conduits – With closures and plugs – Test plugs
Patent
1992-11-17
1993-12-28
Bryant, III, James E.
Pipes and tubular conduits
With closures and plugs
Test plugs
138 89, 138 92, 73 405R, 73 491, F16L 5510
Patent
active
052730778
ABSTRACT:
A pipe fitting having an end wall and forming a port radially inwardly of the flange to align with the wall opening; an annular elastomeric seal positioned to be compressed between the wall and the work body wall for preventing leakage of fluid outwardly from the wall opening; a test cap unit spaced from the seal and aligned therewith to close off the opening and fastener structure extending through the cap unit and adjustably attached to the fitting for urging the cap unit into sealing relation with the inner side of the work body wall, about the opening, when the seal is compressed as aforesaid, whereby the cap unit then closes off the opening so that test liquid under pressure can be filled into the fitting to test for leakage; the cap unit having annular sealing structure facing toward the annular seal for sealing engagement with the wall inner side, the sealing structure comprising an elastomeric ring and the cap unit includes a plate carrying the ring, the ring consisting of resiliently deflectable material projecting from the plate. That material is typically sponge elastomer.
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American Brass & Aluminum Foundry Company, Inc.
Bryant III James E.
Haefliger William W.
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