McAlpine ARB-1 Anti Cross-Flow and Rodent Barrier Valve, Black

McAlpine ARB-1 4"/110mm Anti cross-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 cross flow if fitted to back to back WC pans. Deters rodents from entering the building through WC. Can be installed horizontally or vertically. Manufactured in Black polypropylene to prevent light penetration. Manufacturers code: ARB-1