Standard or Nonstandard:Standard Structure:Shutoff Pressure:Medium Pressure Power:Pneumatic Material:Brass Temperature of Media:Normal Temperature Media:Gas Port Size:1 4" 3 8" 1 2" 5 8" 3 4" Application:Air conditioning Working pressure:4 Mpa Vacuum pressure:< 5 pa Air tightness:1*10-7atm.cc s Connect type:threaded connection