Check Valve, AquariumPrevents back siphoning of water through tubing when the power is off, which could damage your air pump or form a puddle that could shock you when electricity returns to your system. High-quality duckbill check valve can be used with 3/16" or 5/32" I.D. tubing. Resistance at .07 cfm is only 3" H2O. Note: Color may vary. |
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