Combination Vacuum Relief Valve

Combination Vacuum Relief Valve

Combination Vacuum Valves are designed to perform the same function as Vacuum Relief valves. 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
  • Increase efficiency of water transport in a piping
  • Prevent overflowing
  • Drain small air pocket from piping
  • Easily cleaning the inside of air valve


Large Orifice 1inch (25mm) ~ 12inch (300mm)
Small Orifice 1/16inch (1.6mm) ~ 1inch (25mm)
Flange ANSI 1/2inch (13mm) ~ 12inch (300mm)
Setting Vacuum
-150 mmW.C ~ -7000 mmW.C
Material WCB, Stainless Steel, Ni-Al-Bronze, Duplex, Hastelloy, Incoloy series