ISF SERIES for raw or storm water, TSE & low-pressure applications and potable water.

The NUVENT ISF SERIES is a double acting (3 stage) air release and vacuum break valve. They combine high volume air release, pressurized air release, anti slam and vacuum break all in one compact tubular design. 

Only WRAS / NSF 61 approved materials are used in our valves, thereby ensuring no contamination occurs when used with potable water.