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Combination air valve (Air release and vacuum breaker valve)

Combination air valve (Air release and vacuum breaker valve)

  • Certificate: UL Listed
  • Standard: UL 2573, NFPA 20, AWWA C512
  • Connection: Threaded NPT, Flanged as B16.1 Class 125, B16.5 Class 150, etc.
  • Feature: Large and small orifices, vent and admit air
  • Temperature: 0 ~ 80°C
  • W. pressure: 300 psi
  • Surface: FBE coating as AWWA C550

Product Details

Combination air valve has the features of both air/vacuum valve and air release valve. It performs the same function as air/vacuum valve to release or admit large quantity of air, and also release small air like an air-release valve.

Available Size (Source 1 with UL)

Inlet Outlet 1 Orifice 1 Working pressure (psi) Ref.No.
2” FLG 1-1/4” NPT 1-1/4” 300 U1901
2-1/2” FLG 2″ NPT 2” 300 U1902
3” FLG 2″ NPT 2” 300 U1903
4” FLG 2-1/2″ NPT 2-1/2” 300 U1904

 

Available Size (Source 2 with UL)

Inlet Outlet Orifice Working pressure (psi) Ref.No.
1” NPT 1” NPT 0.076” 300 U1911
2” FLG / NPT 2” NPT 0.076” 300 U1912
3” FLG / NPT 3″ NPT 0.076” 300 U1913
4” FLG / NPT 4″ NPT 0.076” 300 U1914
6” NPT 6″ NPT 0.076” 300 U1915

Note: For end connection, it is also available with flanged as ANSI class 150 / 300, and it is ISO certified, not UL.

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