Mozzie Stoppa Hi-Flow Flap 4" Round
- Automatically opens and shuts
- Keeps pests from entering the tank via the overflow
- Higher Overflow flow rate for heavy rainfall events
- 1/32" aperture, grade 316 stainless steel mesh
- Self Cleaning
Installation Instructions: A flexible adaptor such as a No Hub Coupling (not supplied) is required to fit the 4" Flap valve to a 4" round pipe. Begin by fitting the flexible coupling to the 4" pipe (schedule 40 recommended) and partially tighten. Fit the Flap valve into the other end of the flexible adaptor and when satisfied with its orientation, tighten both ends of the flexible coupling well. Installing these products with your water tank/cistern will enhance water quality and reduce overall maintenance.