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 / NPT | 1-1/4″ NPT | 1-1/4″ | 300 | U1901 |
| 2-1/2″ FLG / NPT | 2″ NPT | 2″ | 300 | U1902 |
| 3″ FLG / NPT | 2″ NPT | 2″ | 300 | U1903 |
| 4″ FLG / NPT | 2-1/2″ NPT | 2-1/2″ | 300 | U1904 |
Available Size (Source 2 with UL)
| Inlet | Outlet | Orifice | Working pressure (psi) | Ref.No. |
|---|---|---|---|---|
| 1″ FLG / 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″ FLG / 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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