... 2. Air Tightness Inspection 2.1 Air Inflation Filled with Helium to system, the pressure is higher than highest pressure 1MPa ... to reservior temperature. 3.2 Inflation Open the cylinder, inflate Helium gas to system, adjust standard pressure valve, and then ... Converter Precision 16 Gassource Aggregate Supply 3 Gas Input Methane Helium Carbon Dioxide Pressure 20MPa Stability 3% Electric Gas Regulator ...