4 in. Mozzie Stoppa Hi-Flow Flap Valve

Hi-Flow Flap Valves allow a rapid flow of water through a double sealed, self cleaning valve that cannot be over rotated and left open. Vented Flap Valves allow a flow of air over the surface of the water which improves water quality and prevents a vacuum forming when large quantities of water are quickly drawn from the tank/cistern.Features and BenefitsMosquito and vermin proofAllow stored water to breathe1/32 aperture, grade 316 stainless steel meshTo suit 3 in or 4 in couplingDouble self-cleaning seal with flaps that cannot be over-rotated and left open.