100mm Non Return Valve (4″ Retrofit for DN100 Pipe Inlets)
$38.88
$65.71
Description The 100mm Non Return Valve is a WRc Approved, push-fit retrofit device designed to fit DN100 pipe inlets (97mm–106mm) within existing manholes. This simple yet effective product prevents backflow from sewerage systems, reducing the risk of internal flooding through toilets, plug holes, and waste pipes. The valve also provides protection against rodents and insects, making it an essential addition to flood prevention systems for homes and commercial buildings. Installation is quick and easy. No specialist tools or skills are required — the non return valve can be fitted in minutes by simply pushing it into the relevant pipe inlet. Its unobtrusive profile allows normal forward flow to continue unimpeded while preventing reverse flow during blockages or surges. The reinforced stainless steel flap also serves as a rodent barrier, helping to prevent rats and other pests from entering buildings via drainage systems. The 100mm Non Return Valve is ideal for use in properties at risk of flooding or rodent ingress. Whether for domestic, commercial, or light industrial use, it provides a passive, maintenance-free solution to an increasingly common problem. Its compliance with BS EN 13564-1:2002 ensures confidence in its performance and reliability. Key Features • Flood Prevention: Blocks reverse flow during sewer surcharges or system blockages • Push-Fit Installation: Installs in minutes with no tools or specialist skills • Rodent Barrier: Stainless steel flap deters rats and other vermin • Unobtrusive Design: Maintains natural flow and does not obstruct normal drainage • WRc Approved: Independently verified to meet BS EN 13564-1:2002 • Universal Fit: Compatible with all pipe materials within size range • Maintenance-Free: No ongoing servicing or adjustments required Specifications • Size: Fits DN100 pipe inlets (97mm–106mm 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 • Existing manhole inlets in domestic and commercial buildings • Flood-prone areas with sewer surcharge risk • Properties requiring pest deterrent measures in drainage systems • Surface water and foul water drainage pipes Why Choose Stanley John LTD Based in Newbury, Berkshire, Stanley John LTD proudly serves Berkshire, Hampshire, Wiltshire, Oxfordshire, Surrey, Greater London and more. We are trusted for supplying high-quality, WRc-approved drainage and flood prevention solutions. Explore our full Underground Drainage Pipes & Fittings range for compatible products and accessories. Order Now Order the 100mm Non Return Valve (Retrofit for DN100 Pipe Inlets) today for quick, reliable backflow and pest protection. Order online now from Stanley John LTD.
