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.