... Overpressure Protect 1 RTJ-GQ pressure regulator with cut off fuction1.1 The outside drawing 1.2 The structure ... action, good performance of close, with Overpressure automatic cut off function, valve position indication3 Install and adjust are easy, ... Patent NO:ZL200720078869.3ApplicationGas pipeline network for high pressure, city gate station, District regulator station, industrial user, Gas supply ...