150mm Non Return Valve (Retrofit for DN150 Pipe Inlets)

Description The 150mm Non Return Valve is a WRc Approved push-fit retrofit device designed to fit DN150 pipe inlets (148mm–153mm) within existing manholes. It helps prevent backflow from blocked sewerage systems, reducing the risk of flooding through toilets, plug holes, and waste pipes. The stainless steel reinforced flap also acts as a rodent barrier, stopping rats and other pests from entering buildings via drainage systems. This simple yet effective flood protection product requires no tools or specialist knowledge. It can be installed in minutes by pushing the valve into the pipe inlet, making it an ideal upgrade for both domestic and commercial properties. Its unobtrusive design ensures that normal water flow is not disrupted, while blocking flow in the opposite direction during flooding or surcharge events. The 150mm Non Return Valve is compatible with all pipe materials within its size range and is fully compliant with BS EN 13564-1:2002. Whether protecting homes, business premises, or public buildings, it offers peace of mind against both water damage and pest ingress. Key Features • Flood Protection: Prevents backflow through DN150 manhole pipe inlets • Quick Installation: Push-fit design installs in minutes without tools • Rodent Resistance: Stainless steel flap blocks rats and other vermin • Discreet Function: Allows normal flow while preventing reverse surges • WRc Certified: Tested and approved to BS EN 13564-1:2002 • Universal Fit: Seals against all pipe materials within size tolerance • No Maintenance Needed: Long-term protection without servicing Specifications • Size: Fits DN150 pipe inlets (148mm–153mm range) • Material: Polypropylene, 430 Stainless Steel, TPE • Connection Type / Load Rating: Push-fit / Not load-bearing • Standard: BS EN 13564-1:2002 • Colour: Black body with stainless steel internal flap Applications • Manhole inlets in domestic, commercial, or public buildings • Areas at risk of internal sewer flooding • Pest-proofing drainage systems against rodents • Foul and surface water systems where backflow is a concern Why Choose Stanley John LTD Stanley John LTD is based in Newbury, Berkshire and supplies drainage solutions across Berkshire, Hampshire, Wiltshire, Oxfordshire, Surrey, Greater London and more. Our product range is trusted by homeowners and trade professionals alike. Discover more options in our Underground Drainage Pipes & Fittings range. Order Now Order the 150mm Non Return Valve (Retrofit for DN150 Pipe Inlets) today for hassle-free protection against backflow and rodent ingress. Order online now from Stanley John LTD.