The Airmax Check Valve Assembly .750 NPT protects your Airmax Aeration Systems by preventing water from traveling up through your airline and into internal aeration components. The Check Valve only allows a single direction of airflow; it is important that the check valve is installed with your aeration stone on the "out" end and the aeration source on the "in" end.
- Size: 3/4 in. FPT
- For use with Airmax ProAir2 or ProAir 4 Complete Lifted Diffuser Plate