초록 ▼

An insolation plug suitable for leakage testing a liquid conduit has an O-ring seal mounted adjacent one end of its body to mate with a sleeve in a pump fitting for the conduit when the plug is inserted in the fitting through a threaded hole. This seals off the outlet of the fitting from its remaini

An insolation plug suitable for leakage testing a liquid conduit has an O-ring seal mounted adjacent one end of its body to mate with a sleeve in a pump fitting for the conduit when the plug is inserted in the fitting through a threaded hole. This seals off the outlet of the fitting from its remaining portions. The plug contains a bore through which the liquid in the conduit may be pressurized for testing purposes. An additional base in the isolation plug communicates with the portions of the fitting upstream of the seal to permit liquid to be discharged from the tank through the additional bore.

대표청구항 ▼

An isolation plug suitable for leakage testing of a liquid conduit by means of line test apparatus capable of pressurizing the liquid conduit, said liquid conduit being connected to the outlet of a fitting having a sleeve through which the liquid discharged from the fitting passes, said fitting havi

An isolation plug suitable for leakage testing of a liquid conduit by means of line test apparatus capable of pressurizing the liquid conduit, said liquid conduit being connected to the outlet of a fitting having a sleeve through which the liquid discharged from the fitting passes, said fitting having a threaded hole axially aligned with the sleeve, said isolation plug comprising: an elongated body having an exterior surface surrounding and defining the body in a direction parallel to its elongation, said surface extending between ends of said body; sealing means on said exterior surface adjacent one end of said body, said sealing means surrounding said body and being adapted to mate with the sleeve in the fitting when said plug is inserted in the fitting through the threaded hole to seal off the outlet of the fitting from the remaining portions of the fitting; and thread means on said exterior surface of said body intermediate the ends of said body, said thread means mating with the threaded hole in the fitting when the plug is inserted in the fitting for retaining the plug in the fitting; said body having a passage extending therethrough, one end of said passage opening into the outlet of the fitting downstream of the seal formed between said sealing means and the sleeve, the other end of said passage opening on said body exteriorly of the fitting, the other end of said passage having means adapted to mate with the line test apparatus to permit pressurizing of the liquid conduit for testing purposes.