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100mm

Flap Valve Plain

Flap Valves
Keep mosquitoes out of your tank outlet pipes while allowing water to flow out unimpeded with this plastic flap valve.
Size 100mm TAFV03
TAFV03 Front 01

Protect your rainwater quality

By creating a physical barrier at the end of your tank outlet pipes, the Flat Valve Plain keeps mosquitoes out of your tank to protect the quality of your rainwater.

TAFV02 Side Open 02

Let water out

When overflow water needs to exit your tank, the hinged Flap Valve Plain automatically opens to let it out. This ensures unimpeded flow even during high rainfall events. Importantly, the flap cannot over-rotate or be left open as it closes automatically afterwards.

Secure your System with Rain Harvesting  Flap Valves. Securing a Flap Valve to end of your tank and downpipe outlets ensure pests and insect can’t enter your rain harvesting system and harm your rainwater.

Learn more about the 4 pillars of designing a Rain Harvesting system. 

The Rain Harvesting steps addressed:

Limit sources of contamination     Plan for volume

Filter leaves and debris                    Divert the first flush

Secure the system                             Manage standing water

Consider a safety net                        Monitor and maintain

  • Specifications

    Flap Valve Product Dimensions

  • Installation

    Tank overflow outlet or tank overflow outlet pipe

    1. Select an installation point for your Flap Valve. It can be attached directly to your tank overflow outlet, or to your horizontal tank overflow outlet pipe.
    2. Orient your Flap Valve so the hinge is at the top, then secure directly to your chosen installation point with silicone or solvent weld glue.

    Non-plumbed tank inlet pipe

    1. Orient your Flap Valve so the hinge is at the top, then secure directly to your non-plumbed tank inlet pipe with silicone or solvent weld glue.
  • Maintenance

    Your Flap Valve is self-closing and largely self-cleaning, so it requires little to no maintenance. If maintenance is required, simply hose or brush off the flap or mosquito-proof stainless steel vented screen.

  • What's in the box?
    • Flap Valve Plain
  • Tools you might need
    • Silicone (optional)
    • Solvent weld glue (optional)
  • Product FAQ's

    What are the benefits of a vented flap valve?

    Vented and non-vented flap valves provide a self-cleaning insect-proof and vermin-proof barrier at the end of your pipework. However, vented flap valves also allow fresh air to circulate freely through your pipework and tank, a benefit not available with non-vented flap valves.

    What’s the difference between a flap valve and a frog flap?

    “Flap valve” and “frog flap” are interchangeable names for the same product. Both are designed to keep frogs and smaller pests such as mosquitoes out of your pipework and tank.

    Do I need to glue this fitting?

    We recommend gluing flap valves to your pipes. Although a flap valve is an end of line component and is not subjected to pressure, it is important that all mosquito-proof barriers are secure.

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