An apparatus and method for leakage testing of a pressurized/suction piping system. The apparatus includes a pump assembly for pressurizing the test system formed by the apparatus and the piping system, a pressure source connected to at least one input line assembly, an input line for supplying...http://www.google.de/patents/US5850037?utm_source=gb-gplus-sharePatent US5850037 - Apparatus and method for leakage testing of pressurized/suction piping systems 
