Patent ID: 8640736

Claim:
An apparatus for pressure testing a plumbing system, comprising: a hollow body defining an interior cavity, the body having a first pipe connection defining a first path into and out of the interior cavity and a second pipe connection defining a second path into and out of the interior cavity, and a vertically oriented third pipe connection defining a third path into and out of the interior cavity; an interior sealing surface on the body within the interior cavity, the interior sealing surface encircling the first pipe connection; a rigid plug having an exterior sealing surface; a plug receiver carried by the hollow body within the interior cavity and accessible from above through the third pipe connection, the plug receiver comprising an open-topped slot that receives the plug and forces the exterior sealing surface of the plug into sealing engagement with the interior sealing surface such that the second pipe connection remains in fluid communication with the third pipe connection; and means for pulling the plug out of engagement with the plug receiver; wherein the plug has a first inclined plane engagement surface and the plug receiver has a second inclined plane engagement surface, the first inclined plane engagement surface and the second inclined plane engagement surface cooperating to wedge the exterior sealing surface of the plug into sealing engagement with the interior sealing surface within the interior cavity of the body.