Installed in the steam turbine suction pipe, with the check valve automatically shut down and the implementation of the mechanism to quickly shut down the dual function can be quickly closed within 0.5 seconds to prevent the steam caused
by the turbine blade damage


  • Nominal diameter DN150-DN1100, NPS 6-NPS 44
  • Pressure class PN16-P61200, Class 150-Class 3500 spl
  • Implementation of the standard NB / T 47044, ASME B 16.34