4"/110mm Anti Back-Flow and Rodent Barrier Valve
- 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 back flow 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
