Combination Air Valve (Anti shock/Anti surge)

      SCI combination air valve are specially designed for variety water purpose to the most efficiency including anti shock closing from surge and water hammer situation, large volume discharge/admitting of air during the filling or column separation and also release accumulated air while the system is in operation.


  • Anti shock/Anti surge device reducing surge and water hammer.
  • Automatic air discharge/admitting and release function.
  • Full flow area design.
  • Cast iron or Ductile iron construction.
  • Corrosion resistant stainless steel Float.
  • Screen at outflow port with Cover.
  • Minimum levels of maintenance and service.
  • Fast and easy installation.

Design specifications

  • Size: 50 mm. to 300 mm.
  • Woring Pressure: 6,10,16,20,25,35,40 Bar
  • Temperature: Up to 70 °C or 160 °F
  • Shell test: 1.5xPN
  • Seat test: 1.0xPN
  • International Flange connections BS/ISO/ANSI/DIN