Also called as rat flap.
4″/110mm Anti Back-Flow and Rodent Barrier Valve. Manufactured from black polypropylene to prevent light penetration. Will deter rodents from entering the building and can be fitted to any McAlpine WC connector with 4″ / 110mm rubber outlet seal in both commercial or domestic drainage situations. Door is stainless steel mesh backed plastic that rats won’t bite through.
For use with any McAlpine rigid or flexible WC connector with 4″/110mm rubber outlet seal
For use where special measures are necessary for control of rodents as recommended in Approved Document H1 The Building Regulations 2000 (2002 Edition)
Prevents backflow when fitted to WC pans as long as they are connected to the correct configuration of drain and soil pipe on a system and comply with the current building regulations and BS EN 12056-2:2000.
Deters rodents from entering the building through WC
Can be installed horizontally or vertically
Manufactured in black polypropylene to prevent light penetration