Vacuum Relief Valve

Vacuum Relief Valve

For critical applications where vacuum protection is a must or water column separation is predicted, a vacuum breaker is used. The Vacuum Breaker is mounted at critical pipeline high points, penstocks, or tanks and allows for rapid inflow of atmospheric air to reduce vacuum conditions in piping systems.


  • Vacuum relief for piping protection
  • Prevent Water Hammer & Vortex Phenomena
  • Prevent overflowing
  • Easily cleaning the inside of air valve


Large Orifice 1inch (25mm) ~ 12inch (300mm)
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