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    Non-return Valves

    Non-return Valves

    Capricorn non-return valves are designed for installation on horizontal pipe segments in sewage manholes either inside or outside buildings. Non-return valves provide anti-flooding protection and help to protect buildings against flooding due to rainwater travelling back down the sewage system. Capricorn non-return valves are automatically operated, providing free waste water drainage according to the slope of the rainwater drain.

    We offer type I and type IV non-return valves with one flap and type II non-return valves with two flaps with Duo Protect system to ensure double protection based on two automatically closed protection flaps. 

    Capricorn non-return valves have been awarded the TÜV Rheinland Certificate of Conformity T+M!

    Capricorn non-return valves are available in an extensive range of sizes so as to enable their installation in waste water drains and systems with the following pipe diameters:

    • non-return valves with one flap: Ø50 – Ø200 
    • non-return valves with two flaps: Ø110 – Ø200

    TECHNICAL SPECIFICATIONS – Capricorn non-return valves:

    • Material: ABS steel
    • Stainless steel non-return valves   
    • Safety tested to EN 13564
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