... 2 test pressure: 0-100KPa Kpa 3 diameter hoses 7-60mm length:200-600mm 4 the holding time:1- ... :150W;2 test pressure: 0-100KPa Kpa3 diameter hoses 7-60mm length:200-600mm4 and test line: one,5 ... automatically pipeline vacuum tank and will remain the system pressure,7, the inlet valve shut down automatically, time relay ... standard, determine whether eligible. Automotive testing equipment&vacuum Tester