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Backflow Prevents

  • PVC Check Valve

    ( reviews)

    * Swing Check Valve Prevents Backflow * Rated 125 PSI * Corrosion Resistant Engineered for maximum flow quick response and positive shutoff. The PVC Sch 40 Slip x Slip swing check valves are designed for horizontal installations but may be installed in up-flow only vertical installations. Check…
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    $16.99 - 89.99
  • Replacement Windmill Air Stone With Foot Valve

    5.0

    (2 reviews)

    …or damaged windmill air stones in a matter of minutes. The replacement air stone includes a separate foot valve (backflow valve) that attaches to the top of the diffuser and prevents water from coming back into the airline. The air stone can also be used to add additional airline and increase…
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    $99.99