... system.Parameters Pressure level,PN64Nominal diameter,DN20Seal property,gas leakage≤1×10-15 MPa·m3/sOperating temperature,-40°C~80°CImpact ... life,5000 times Material & connection Valve body,LY12-CZValve core,HPb59-1Spring,3J9Sealing,EPDM(E),metallic sealingConnecting,M45×2,M33×2 ...