--- product_id: 52404819 title: "Buffalo Retro fit -Non Return Valve to fit 4 inch (110mm) Sewerage Pipe" brand: "buffalo flood systems" price: "681.70 DT" currency: TND in_stock: true reviews_count: 13 category: "Buffalo Flood Systems" url: https://www.desertcart.tn/products/52404819-buffalo-retro-fit-non-return-valve-to-fit-4-inch store_origin: TN region: Tunisia --- # 110mm / 4" universal fit Stainless steel rodent barrier Tool-free push-fit install Buffalo Retro fit -Non Return Valve to fit 4 inch (110mm) Sewerage Pipe **Brand:** buffalo flood systems **Price:** 681.70 DT **Availability:** ✅ In Stock ## Summary > 🚫🐀 Stop floods, smells & pests before they start — the valve every savvy homeowner needs! ## Quick Answers - **What is this?** Buffalo Retro fit -Non Return Valve to fit 4 inch (110mm) Sewerage Pipe by buffalo flood systems - **How much does it cost?** 681.70 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/52404819-buffalo-retro-fit-non-return-valve-to-fit-4-inch) ## Best For - buffalo flood systems enthusiasts ## Why This Product - Trusted buffalo flood systems brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Odor & Fume Seal:** Flexible fins prevent foul smells and noxious gases from invading your space. - • **Universal 110mm Fit:** Seamlessly fits both clay & plastic pipes for versatile installation. - • **Bend-Friendly Design:** Unique valve shape fits bends up to 45°, ensuring flawless performance. - • **Rodent & Flood Defense:** Stainless steel flap blocks rats and backflow, protecting your property. - • **Effortless Installation:** No tools needed—install in under a minute with simple push-fit design. ## Overview The Retro Fit 110mm 4 inch Drain Non Return Valve by Buffalo Flood Systems is a robust, easy-to-install backflow prevention valve designed for 110mm clay and plastic pipes. Featuring a stainless steel flap, it effectively blocks rodents and prevents floodwater backflow, while flexible fins seal out odors and noxious fumes. Its unique shape allows installation on pipe bends up to 45°, making it the ultimate solution for flood-prone properties seeking hassle-free protection and improved hygiene. ## Description Product Description Buffalo Flood Systems design easy to install robust flood prevention solutions. Stops back-flow of effluent into properties, businesses and homes during flooding. One way valve allows foul water to leave your home, but automatically closes to prevent back-flow from drains in the a flood event. Will be used extensively in properties on flood plains. 50% of flood damage comes from back flow from the drainpipes, the Buffalo non return valve solves this issue Stop water and rodents from coming back up drainpipes Unique shape means it can be installed on the bend of pipes Simple push fit install – requires no tools and can be installed in less than a minute Suitable for 110mm clay and plastic pipes Stainless steel plate to prevent rodents coming up drainpipes – humane way to deal with rats as it allows the rodent to leave the property but not come back Also reduce the risk of noxious fumes and bad smells coming up from drain pipes Stops Backflow Seals with Flexible Fins Clay and plastic fitting Fits on 110mm or 4″ pipes Durable Rubber Must be inserted properly Buffalo Retro fit Non-Return Stainless Flap Valve helps to stop foul water back into the properties through sewer lines. One-way valve allows foul water to leave your home, but automatically closes to prevent backflow from drains in a flood event and a seal also prevents bad smells coming from the drains. Can open on a 45-degree bend One Way Flap Automatic Closure Prevents Backflow Stop Bad Smells Buffalo Flood Systems design easy to install robust flood prevention solutions Unique Shape for Proper Installation Easy to install in pipes Flexible Fins for easy fit inside Offset flap to ensures easy open Fins grip & compress against the pipe Easy Install One Push Fit – All Pipes No fancy tools required Easy install without any hassle Humane Pest Management Stop smells and noxious fumes Unique flap doesn’t catch on the chamber walls Stops Rats, Frog and Snakes incoming Review: Resolved the problem of the return of bad smell in a drainage - Dear plumber of the world, this is an amazing valve and I cannot believe many plumbers do not know anything about it. If the size of the pipe is correct, easy to install and completely solved the problem of the return smell in the bathroom of an Edwardian house. Sorry I did not take a pic but even me could manage to do it, everyone can. Review: Seems to work well - Fairly easy to fit. To really set it back into the pipe I placed a block of wood across it and used a hammer to knock it in. As an added bonus we no longer get drain smells coming into the house when I remove indoor drain covers for clearing. ## Features - 110mm / 4" drain non return (back flow) valve - Anti-flood and rat valve - Anti rodent valve / Rat stopper with stainless steel plate flap PREVENTS RODENTS from entering the property - The W.A.R. valve's unqiue design means it will fit CLAY AND PLASTIC PIPES, and opens and clears chamaber walls on bent inlet chamber pipes - Rero fit into existing inspection chamber or pipe end making it EASY AND SIMPLE to install (no DIY required) - The BEST WAY TO PROTECT AGAINST FLOOD DAMAGE from back flow via the sewage system ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0190PE9RK | | Best Sellers Rank | 12,153 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 52 in Valves (DIY & Tools) 69 in Livestock Equipment & Supplies | | Brand | Buffalo Flood Systems | | Connector Type | Flanged | | Customer Reviews | 4.4 out of 5 stars 300 Reviews | | Exterior Finish | Plastic,Stainless Steel | | Exterior finish | Plastic, Stainless Steel | | Global Trade Identification Number | 00700461580201 | | Included Components | Valve | | Inlet Connection Size | 4 Inches | | Inlet Connection Type | Flange | | Inlet connection size | 4 Inches | | Inlet connection type | Flange | | Item Dimensions | 11 x 11 x 11 centimetres | | Item Type Name | RODENT VALVE | | Item Weight | 0.23 Kilograms | | Item dimensions L x W x H | 11 x 11 x 11 centimetres | | Manufacturer | Water and Pest Technologies | | Material | Stainless Steel | | Model Number | 10663457 | | Number of Pieces | 1 | | Number of Ports | 2 | | Outlet Connection Size | 1.1E+2 Millimeters | | Outlet Connection Type | Flansch | | Set Name | Single Non-Return Flap Valve | | Size | 110mm / 4" | | Smart Home Compatibility | Not Smart Home Compatible | | Thread Type | BSP | | UPC | 700461580201 | | Unit Count | 1.0 count | | Valve Type | check valve | ## Product Details - **Brand:** Buffalo Flood Systems - **Exterior finish:** Plastic,Stainless Steel - **Global Trade Identification Number:** 00700461580201 - **Inlet connection size:** 4 Inches - **Inlet connection type:** Flange - **Item dimensions L x W x H:** 11 x 11 x 11 centimetres - **Material:** Stainless Steel - **Number of ports:** 2 - **Outlet connection size:** 1.1E+2 Millimeters - **Outlet connection type:** Flansch ## Images ![Buffalo Retro fit -Non Return Valve to fit 4 inch (110mm) Sewerage Pipe - Image 1](https://m.media-amazon.com/images/I/71APxKuXNiL.jpg) ## Questions & Answers **Q: Hi, any chance of this fitting a 100mm drain?** A: Yes it will fit a clay 100mm drain because it fits around the outside of the pipe. It may be a bit loose and need packing out on a modern plastic pipe but it works wonders for vermin infestations. Keith **Q: Does this stop sewer smells, we get smells in our new onsuite from around the pan** A: It definitely stops smells from sewer backing up an outlet pipe but not sure about inside the house. I wouldn’t have thought smells could get through the water barrier sat in the pan/ waste trap. Might be some other issue. **Q: Does the flap hold shut if upside down. I need to install on a pipe which goes in to a hopper so the flap will be upside down. Will it stay shut** A: Hi, the flap will open if the valve is turned or installed upside down so No. However it can be locked closed in that position by using the red flap to lock closed. Tony **Q: Does it serve for sewage or rainwater only?** A: Hi,I'm not sure what you mean,I fitted mine onto the end of of sewage outlet pipe in the manhole outside. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Resolved the problem of the return of bad smell in a drainage *by A***R on 30 May 2026* Dear plumber of the world, this is an amazing valve and I cannot believe many plumbers do not know anything about it. If the size of the pipe is correct, easy to install and completely solved the problem of the return smell in the bathroom of an Edwardian house. Sorry I did not take a pic but even me could manage to do it, everyone can. ### ⭐⭐⭐⭐⭐ Seems to work well *by T***G on 28 February 2024* Fairly easy to fit. To really set it back into the pipe I placed a block of wood across it and used a hammer to knock it in. As an added bonus we no longer get drain smells coming into the house when I remove indoor drain covers for clearing. ### ⭐⭐⭐⭐ Easy to fit - hope it will last the distance! *by S***N on 20 December 2021* This was purchased primarily as a defence against flooding from the foul water drain, as this seems to be a major cause of house flooding. The price seems excessive for what it is (it’s of very simple construction) but if it’s ever caused to do the job it’ll potentially save thousands. The item was very easy to fit - just drizzled some washing liquid over the rubber sleeve & it went into the pipe like a rat up a drainpipe! - so easily, in fact, that I was concerned it might come out again just as easily. Two checks later (one after 24hrs & the second a week later) showed it to be still robustly in place. I remain slightly concerned by the 2* review which shows the plastic cover severely damaged by rats but time will tell. All-is-all seems a good product, if over-priced. ## Frequently Bought Together - Retro Fit 110mm 4 inch Drain Non Return Valve with Stainless Steel Flap - Mcalpine ARB-1 Anti Cross-Flow and Rodent Barrier Valve, Black - 110mm Non Return Valve Backflow DN110 Single Stainless Steel Flap Valve --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/52404819-buffalo-retro-fit-non-return-valve-to-fit-4-inch](https://www.desertcart.tn/products/52404819-buffalo-retro-fit-non-return-valve-to-fit-4-inch) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-02*