The Airmax® PondAir Check Valves protect your PondAir Aeration Kits by blocking water from entering your airline and into internal system components. Check Valves are designed to allow a single direction of airflow.
Please note: Check Valves are marked with "in" and "out" on either end. 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. Learn how to install the Check Valves with the PondAir Aeration kit video.
CrystalClear® Product Video - CrystalClear® PondAir™ Aeration Kits
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