Patent ID: 6637464
Filing Date: 2003-10-28
Classification: E03D,F16L

Abstract:
A coupling assembly for use in hydrostatic testing of a building drain, which comprises:(a) a coupling having a first end and a second end with a center bore extending between the ends and configured to be connected to the building drain at the second end, wherein the center bore of the coupling has a tapered portion adjacent the first end of the coupling so that a first diameter of the center bore at the first end of the coupling is greater than a second diameter of the center bore at an end of the tapered portion spaced apart from the first end of the coupling; and (b) a test cap having a first side and a second side and mounted on the first end of the coupling such that the second side of the test cap is adjacent to and spaced apart from the first end of the coupling such as to close the center bore of the coupling at the first end of the coupling, the first side of the test cap having an annular groove forming a center portion wherein the second diameter of the center bore of the coupling is less than a diameter of the center portion of the test cap and wherein the groove provides a weakened area on the first side such that in use, after the hydrostatic testing of the building drain is complete, the center portion of the test cap is detached from the test cap at the groove to provide an opening through the test cap to allow access to the center bore of the coupling and moves into the center bore of the coupling and stops at the end of the tapered portion spaced apart from the first end of the coupling to allow for removal of the center portion from the coupling.