Rain Harvesting 100mm Plain Flap Valve

• Keep mosquitoes, frogs and other pests out of the pipework on your system.
• Whenever water is flowing, the Flap Valve automatically opens to let it out. This ensures unimpeded flow even during high rainfall events.
• The foolproof design ensures that the flap remains closed when no water is flowing, and it can not over rotate or get stuck open. You're always protected.

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