McAlpine Tundish 15mm with Self Closing Valve

Incorporates a self-closing membrane which opens to allow discharge to flow freely and then closes to form a seal. Membrane seal creates no resistance, ensuring smooth discharge flow from the PRV/TRV, and is spring-free, so not affected in hard water areas. Prevents foul odour or sewer gas entering the building when installed into a waste or soil pipe. If required the top tundish window can be removed from the Mactun body for inspection or cleaning when maintenance work is being carried out. Type AA Air... - Manufacturers part number: 371JJ