... R22,R12,etc.Refrigerant cylinders3MPa pressure level for the export-oriented600*1800*8R-134a,R22,R12,Cl2NH3 ... R22,R12, Cl2NH3,SO2HF etc3MPa pressure level for the export-oriented800*2100*10R-134a,R22,R12, Cl2NH3 ... R22,R12, Cl2NH3,SO2HF etc3MPa pressure level for the export-oriented800*2240*10R-134a,R22,R12, ... needle valve adjustment of chlorine flow when for the export cylinder, and does not allow the use ...