초록 ▼

A plumbing fitting comprising a test closure plug for the free end of a trap bushing mounted in the center port of a T-fitting constituting a part of a soil pipe and vent pipe assembly of a plumbing system the free end of the trap bushing is provided with an adapter having an adapter nut and washer.

A plumbing fitting comprising a test closure plug for the free end of a trap bushing mounted in the center port of a T-fitting constituting a part of a soil pipe and vent pipe assembly of a plumbing system the free end of the trap bushing is provided with an adapter having an adapter nut and washer. The washer is removed and the plug is inserted in the adapter opening. The plug is configured to close the adapter opening and make a seal therewith when held in place by the adapter nut. The plug enables pressure testing of the plumbing system or the maintenance of a head of water therein. Upon installation of a fixture with a trap, the nut is removed, the plug is removed, the adapter nut and washer are then used in common trade fashion to connect the trap to the trap bushing in fluid-tight fashion by way of a slip joint. The plug can be reused. A second embodiment of the plug can be used for the same purpose when the nut of the adapter is of the type wherein the adapter washer forms an integral one-piece part of the nut. The second embodiment of the plug can also be used with an adapter having a nut and a separate washer by mounting the washer on the plug, thereby rendering the second plug embodiment similar to the first plug embodiment.

대표청구항 ▼

[ What is claimed:] [1.] A reusable test closure plug in combination with an adapter assembly for temporarily sealing, prior to the installation of a trap, the free end of a trap bushing, said trap bushing being sealingly connected to a port of a fitting constituting a part of a soil pipe and vent p

[ What is claimed:] [1.] A reusable test closure plug in combination with an adapter assembly for temporarily sealing, prior to the installation of a trap, the free end of a trap bushing, said trap bushing being sealingly connected to a port of a fitting constituting a part of a soil pipe and vent pipe assembly of a plumbing system, said free end of said trap bushing having affixed thereto said adapter assembly for receiving, sealing and clamping a trap to said trap bushing, said adapter assembly comprising an adapter affixed to said trap bushing in fluid-tight fashion, a nut threadedly engagable on said adapter and a washer shiftable by said nut to a sealing and clamping position, said plug being configured to cooperate with at least said adapter and said nut to sealingly close said free end of said trap bushing for the purpose of at least one of water testing, air testing, and maintaining a head of water in said plumbing system.