--- product_id: 49023844 title: "Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 110mm" brand: "plumbing4home" price: "2070 kr" currency: NOK in_stock: true reviews_count: 8 category: "Plumbing4 Home" url: https://www.desertcart.no/products/49023844-horizontal-pvc-plastic-sewage-drain-check-non-return-valve-backwater store_origin: NO region: Norway --- # Rodent-proof gasket - no unwanted intrusions High-grade PVC & PP - chemical & heat resistant 110mm pipe fit - robust seal Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 110mm **Brand:** plumbing4home **Price:** 2070 kr **Availability:** ✅ In Stock ## Summary > 🛠️ Secure your space, stop the backflow – because your lower floors deserve the best! ## Quick Answers - **What is this?** Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 110mm by plumbing4home - **How much does it cost?** 2070 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/49023844-horizontal-pvc-plastic-sewage-drain-check-non-return-valve-backwater) ## Best For - plumbing4home enthusiasts ## Why This Product - Trusted plumbing4home brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rodent-Proof Seal:** Specially designed gasket and guard prevent rodents from invading your building through sewage lines. - • **Code-Ready Compliance:** Meets CE and WRAS standards, fulfilling mandatory building regulations for backflow prevention. - • **Smooth Flow, Zero Clogs:** Interior profiling minimizes sediment buildup ensuring uninterrupted sewage flow and hassle-free maintenance. - • **Flood Defense, Always On:** Automatic non-return valve protects lower floors from sewage and stormwater backflow without any power needed. - • **Built to Last, Built to Resist:** Crafted from premium polypropylene and PVC, engineered to withstand aggressive chemicals and hot sewage up to 95°C. ## Overview The KARMAT 110mm Horizontal PVC Plastic Sewage Drain Check Non-Return Valve is a high-quality backwater valve designed to prevent flooding and rodent intrusion in lower floor rooms. Made from durable polypropylene and PVC, it resists chemicals and hot sewage up to 95°C. Its automatic, power-free operation and smooth interior ensure reliable, maintenance-friendly sewage flow. Certified to CE and WRAS standards, it’s the essential safeguard for modern buildings against backflow risks. ## Description KARMAT Backwater Valves (non-return valves) effectively secure any rooms located on the lower floors against flooding caused by back flow of storm water and sewage. Back flow may be caused by intense rains, thaw or floods. Use of anti-flooding devices for rooms located on the lower floors is required by obligatory regulations related to technical conditions that are to be satisfied by building codes. The shape of the protecting guard and gasket has been designed to protect against damage of the gasket by rodents and sliding during sewage flow. Advantages: - Karmat backwater valves operate automatically and do not require any external power supply. Any operations related to the device’s use are very simple and possible to be carried out by any user; - Due care of workmanship and high quality materials used in the manufacturing process guarantee efficient operation and high durability of the product; - The device’s interior with its smooth surface properly profiled, protects against sediment collection and grants complete and undisturbed sewage flow. - Gaskets have been manufactured from a rubber of high resistance to atmospheric influences and to aging Owing to its construction the Karmat backwater valve may successfully replace an access pipe installed in the outlet of sanitary sewage pipes from buildings. Backwater valves are installed in horizontal sewage pipes before they exit a building or sewage drain outside the building before its connection to an external network. They are also installed in inspection chambers made of concrete or plastic. Backwater valves are made of high-quality polypropylene (PP), a very durable and environment-friendly material. Polypropylene is resistant to the effects of aggressive chemicals and hot sewage (up to 95°C). Movable construction elements of valves are made of a material strengthened with fiberglass. Review: Quality backflow valve - Installed inline with existing drain in its own new inspection chamber. Seems a quality part and very well made. Review: Plastic drain valve - Fitted well and did exactly what it was designed to do ## Features - KARMAT Backwater Valves effectively secure any rooms located on the lower floors; - Installed in 110mm sewage pipes before they exit a building or sewage drains; - Prevents against rodents entering building interiors through the sewage and other sanitary systems; - Secure the lower floors against flooding caused by back flow of storm water and sewage; - Made of high-quality PVC Plastic - resistance to the effects of chemicals and hot sewage; ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00BWNXV00 | | Best Sellers Rank | 21,900 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 688 in Pipe Fittings | | Brand | PLUMBING4HOME | | Connector Type | Adapter | | Customer Reviews | 4.7 out of 5 stars 47 Reviews | | Exterior Finish | Nickel | | Exterior finish | Nickel | | Inlet Connection Size | 1.1E+2 Millimeters | | Inlet Connection Type | Solvent | | Inlet connection size | 1.1E+2 Millimeters | | Inlet connection type | Solvent | | Item Dimensions | 20 x 30 x 40 centimetres | | Item Weight | 0.88 Kilograms | | Item dimensions L x W x H | 20 x 30 x 40 centimetres | | Manufacturer | Karmat | | Material | Plastic, Polypropylene (PP) , Polyvinyl Chloride (PVC) | | Maximum Pressure | 0.5 Bars | | Model Number | 5907484551231 | | Number of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | Number of Ports | 1 | | Outlet Connection Size | 1.1E+2 Millimeters | | Outlet Connection Type | Solvent | | Part Number | 450b | | Size | 110mm | | Specification Met | CE, WRAS | | Thread Size | 110 mm | | Thread Type | BSP | | Unit Count | 1.0 count | | Valve Type | Backwater Valve | ## Product Details - **Brand:** PLUMBING4HOME - **Exterior finish:** Nickel - **Inlet connection size:** 1.1E+2 Millimeters - **Inlet connection type:** Solvent - **Item dimensions L x W x H:** 20 x 30 x 40 centimetres - **Material:** Plastic, Polypropylene (PP), Polyvinyl Chloride (PVC) - **Maximum operating pressure:** 0.5 Bars - **Number of ports:** 1 - **Outlet connection size:** 1.1E+2 Millimeters - **Outlet connection type:** Solvent ## Images ![Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 110mm - Image 1](https://m.media-amazon.com/images/I/518Md58TC4L.jpg) ![Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 110mm - Image 2](https://m.media-amazon.com/images/I/717J1jtQrBL.jpg) ![Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 110mm - Image 3](https://m.media-amazon.com/images/I/71+pdVb5-+L.jpg) ![Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 110mm - Image 4](https://m.media-amazon.com/images/I/71ExXeRhoTL.jpg) ## Questions & Answers **Q: How is this fitted into a clay soil pipe in my front lawn. Is there a chamber for it? Thanks.** A: This will not fit an old clay pipe which are 4inch (slightly smaller) this is for new 110mm plastic pipe **Q: Can this be installed vertically? I am unable to access the manhole as this has been concreted over** A: Not suitable for vertical installation, please enter B00VIE67EK in Amazon search bar for a 110mm vertical non return valve, please check to dee if this is suitable **Q: Is this roddable** A: No the valve cannot be installed upside down. It is a swing flap valve. Therefore when installed horizontally it cannot be rotated **Q: Is this easy to fit into an existing clay ground pipe? Thanks.** A: No 110mm plastic pipe only ## Customer Reviews ### ⭐⭐⭐⭐⭐ Quality backflow valve *by M***W on 13 September 2020* Installed inline with existing drain in its own new inspection chamber. Seems a quality part and very well made. ### ⭐⭐⭐⭐⭐ Plastic drain valve *by M***. on 25 August 2026* Fitted well and did exactly what it was designed to do ### ⭐⭐⭐⭐⭐ Karmat one way sewage valve *by A***R on 17 February 2019* Very prompt service. Good quality item representing good value for money. I haven't fitted it yet but delighted so far. ## Frequently Bought Together - Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 110mm - 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.no/products/49023844-horizontal-pvc-plastic-sewage-drain-check-non-return-valve-backwater](https://www.desertcart.no/products/49023844-horizontal-pvc-plastic-sewage-drain-check-non-return-valve-backwater) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-09-16*