Flap Valves

HDPE Flap Valves from Fernco provide a high strength, low cost solution, preventing backflow through drain or sewerage pipes. A full range of high-quality standard and bespoke flap valves are available, ready to defend environments, homes, and properties against rising water levels.

  • A proven flood prevention method
  • Co-extrusion seal making installation quicker and easier with no need for additional tapes or sealants
  • HDPE material is reliably strong yet lightweight for installation convenience
  • HDPE design for protection against the environment
  • Manufactured to class 5 standard of DIN 19569-4 and BS7775
  • 316 steel as standard
  • Up to 50 year life expectancy with regular inspection and appropriate maintenance.

    SKU: flap-valves-1 Category:

    Introduction to Flap Valves

    Flap Valves are one-way valves which are installed at the open end of a pipe line or culvert. Their purpose is to allow downstream water to exit the pipe via a one-way flap door, whilst preventing rising water levels outside of the pipe from entering the pipe and flowing back up the system and flooding the protected area. Both lightweight, corrosion resistant our Flap Valves act as Non-Return Valves and check valves for the prevention of reverse flows.

    Traditional Flap Valves are manufactured from cast iron and whilst Fernco’s standard range of Flap Valves are manufactured from HDPE, a high strength, thick plastic material that is corrosion resistant and also, they are require very low opening pressure and is made from component parts so they can be easily replaced.

    Available in various forms for most installation methods, Fernco Flap Valves can be wall mounted, spigot mounted or available as flange mounted on request.

    Fernco Flap Valves incorporate various seals to ensure leakage into the pipe system is prevented. An integrated and watertight seal pre-installed seals makes them easy to install as no grout of pre-installation process is required.

    Benefits

    Here are some of the benefits:

    • Bespoke valves can be custom built to customer’s requirements
    • Low cracking heads
    • Easy and quick installation – no need for grout between frame and wall
    • Robust and rigid construction
    • UV stable
    • Fully recyclable
    • Manufactured from high-density polyethylene (HDPE).
    • HDPE has almost no weigh-in value making it undesirable to thieves.
    • Materials are corrosion resistant
    • Little to no maintenance required
    • Manufactured to DIN 19569-4

    Mounting Options

    Wall Mounted Flap Valve

    Spigot Mounted Flap Valve

    Flange Mounted Flap Valve

    Tidal Flange Mounted Flap Valve

    Fernco The black tidal-flange-mounted-flap-valve features an industrial-grade safety latch with a circular base, hinge mechanism, multiple bolt holes for versatile mounting, and a secure handle. Its ideal for equipment safety and access control, ensuring reliable operation alongside flap valves.

    Tidal Wall Mounted Flap Valve

    Fernco The tidal-wall-mounted-flap-valve is a compact, black, circular industrial component with a hinged cover and small handle. Mounted on a bolted flat base, its robust design suits heavy-duty applications with versatile mounting options for flap valves.

    Mounting Sets

    Mounting Sets include:

    • M8 capsules & fixings for DN100-300 sizes or M12 capsules & fixings for DN400 sizes and larger;
    • Chemical resin capsules;
    • Stainless Steel 1.4401 (316) anchor fixings;

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