Rubber Check Valve

  • Clamp Type Rubber Duckbill Check Valve

    Clamp Type Rubber Duckbill Check Valve

    1. Direct slip-on installation over un-flanged pipes — no flanges needed.
    2. 100% full-elastomer construction with no mechanical parts to freeze, corrode, or wear out.
    3. Heavy-duty Stainless Steel 304/316 clamp fasteners for reliable, vibration-resistant connections.
    4. Unique flat bill shape for clean discharge and non-slam backflow protection.
    5. Excellent tolerance for solids, slurry, and debris —seals tightly around obstructions without jamming.
    6. Customizable cuff depths to prevent axial blow-off under sudden surge conditions.
    7. Vulcanized multi-layer fabric reinforcement for enhanced structural durability.
    8. Wide size range DN100–DN3000 (4″–120″) with custom options available on request.

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  • Flange Type Rubber Duckbill Check Valve

    Flange Type Rubber Duckbill Check Valve

    1. Passive operation — no moving parts, actuators, or external power required.
    2. Non-clogging rubber duckbill matrix handles solids, sand, and slurry without jamming.
    3. Silent non-slam closure eliminates water hammer and protects upstream pumping assets.
    4. Zero maintenance costs — 20+ year service life with no scheduled maintenance requirements.
    5. Wide size range DN100–DN2000 (4″ to 80″) for municipal and industrial applications.
    6. DIN PN6/PN10 flanging with ANSI, BS10, JIS custom drilling available on demand.
    7. Water-hammer attenuation reduces shock waves by 20–30%.
    8. ISO-standard retrofit compatible with existing flap-type check valves — no structural modifications required.

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