Combination Air/Vacuum Valve with Surge Check

Combination Air/Vacuum Valve with Surge Check

Combination air valves with surge check are designed to perform the same function as air/vacuum valves with surge check. But, in addition, they will automatically release small air pockets of air from the pipeline while under pressure, like an air release valve.


  • Pressure & Vacuum Relief in a piping
  • Prevent Water Hammer & Vortex Phenomena
  • Large capacity Venting & Vacuum relief for piping protection
  • Drain small air pocket from piping
  • Increase efficiency of water transport in a piping
  • Prevent overflowing
  • Easily cleaning the inside of air valve


Large Orifice 1/2inch (13mm) ~ 30inch (750mm)
Small Orifice 1/16inch (1.6mm) ~ 1inch (25mm)
Flange ANSI 1/2inch (13mm) ~ 30inch (750mm)
Material WCB, Stainless Steel, Ni-Al-Bronze, Duplex, Hastelloy, Incoloy series