--- product_id: 65532975 title: "PVC Plastic Check Flap Valve Self Activating End Drainage Backwater 110mm" brand: "plumbing4home" price: "1172 kr" currency: DKK in_stock: true category: "Plumbing4 Home" url: https://www.desertcart.dk/products/65532975-pvc-plastic-check-flap-valve-self-activating-end-drainage-backwater store_origin: DK region: Denmark --- # 110mm precision fit UV & heat resistant rodent & flood protection PVC Plastic Check Flap Valve Self Activating End Drainage Backwater 110mm **Brand:** plumbing4home **Price:** 1172 kr **Availability:** ✅ In Stock ## Summary > 🛠️ Protect your space with smart, self-activating backflow defense! ## Quick Answers - **What is this?** PVC Plastic Check Flap Valve Self Activating End Drainage Backwater 110mm by plumbing4home - **How much does it cost?** 1172 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/65532975-pvc-plastic-check-flap-valve-self-activating-end-drainage-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 Barrier:** Stops unwanted pests from invading your building through sewage lines. - • **Seamless 110mm Integration:** Perfectly fits standard sanitary sewage pipes for hassle-free installation. - • **Certified Quality Assurance:** Meets top industry standards (ANSI, ISO, CE) ensuring reliable and safe operation. - • **Self-Activating Flood Defense:** Automatically prevents backflow flooding, securing your lower floors effortlessly. - • **Durable PVC & Stainless Steel Build:** Engineered to resist sunlight, high temperatures, and aggressive chemicals for long-lasting performance. ## Overview The Karmat PVC Plastic Check Flap Valve is a robust 110mm swing check valve designed to prevent backflow flooding and rodent intrusion in lower-level rooms. Made from high-quality PVC and stainless steel, it offers UV and chemical resistance, ensuring durability and compliance with multiple international standards. Easy to install and self-activating, it safeguards plumbing systems by fitting seamlessly onto sanitary sewage pipes leading stormwater away from buildings. ## Description Flap valves of Karmat are innovative devices protecting rooms on the lower levels against flooding caused by backward flow of storm water and sewage. These devices are fully self-activating. Flap valves effectively protect plumbing systems from rats entering the buildings. Flap valves are installed at the end of sanitary sewage pipes entering collection wells, cesspits or drainage pipes leading storm water to ditches or rivers. Advantages: - high quality polypropylene and stainless steel ending; - sun light/high temperature resistance; - immunity to aggressive chemical compounds ## Features - Flap valves of Karmat are innovative devices protecting rooms on the lower levels; - Installed at the end of 110mm sanitary sewage pipes leading storm water to ditches or rivers; - 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; - High quality PVC Plastic and stainless steel ending, sun light/high temperature resistance ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00BWP5QIS | | Best Sellers Rank | 96,196 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 3,191 in Pipe Fittings | | Brand | PLUMBING4HOME | | Connector Type | Flanged | | Customer Reviews | 4.2 4.2 out of 5 stars (25) | | Exterior Finish | Stainless Steel | | Inlet Connection Type | Flange | | Item Weight | 0.35 Kilograms | | Manufacturer | Karmat | | Material | Plastic | | Model Number | 452c | | Number of Pieces | 1 | | Number of Ports | 2 | | Outlet Connection Type | PVC | | Part Number | 452c | | Size | 110mm | | Specification Met | ANSI B1.20.1, ANSI B16.11, API 609, ASME B16.34, ASSE, ASTM, CE, CSA, EPA, IAPMO, ISO 9001, MSS SP 25, MSS SP 67, MSS SP 72, MSS SP 80, NEMA, NSF, RoHS, ULC, UPC, WQA | | Thread Size | 4 Zoll | | Thread Type | PVC | | Unit Count | 1.0 count | | Valve Type | Swing Check Valve | ## Product Details - **Brand:** PLUMBING4HOME - **Exterior finish:** Stainless Steel - **Inlet connection type:** Flange - **Manufacturer:** Karmat - **Material:** Plastic - **Number of ports:** 2 - **Outlet connection type:** PVC - **Unit count:** 1.0 count ## Images ![PVC Plastic Check Flap Valve Self Activating End Drainage Backwater 110mm - Image 1](https://m.media-amazon.com/images/I/415JluNuHqL.jpg) ![PVC Plastic Check Flap Valve Self Activating End Drainage Backwater 110mm - Image 2](https://m.media-amazon.com/images/I/81cul9GEuXL.jpg) ![PVC Plastic Check Flap Valve Self Activating End Drainage Backwater 110mm - Image 3](https://m.media-amazon.com/images/I/81MW3kMIsAL.jpg) ## Questions & Answers **Q: Will it seal against smell?** A: The flap is only kept closed by gravity and opens when a pressure of water pushes it open. I would imagine that as long as it is closed any smells would be kept at bay but would be released if it opens to let liquid out. It is not primarily designed to keep out odours. **Q: What if the outlet pipe has a slight fall to it, does that prevent the flap from closing properly or should last length of pipe be horizontal ?** A: 1 depends on the fall but if you put the outlet level then you get the best advantage. Mine works well with a 1 to 40 slope. ## Frequently Bought Together - PVC Plastic Check Flap Valve Self Activating End Drainage Backwater 110mm - Buffalo Pest Control Water and Rodent Non Return Valve 110mm / 4 inch - Retro Fit 110mm 4 inch Drain Non Return Valve with Stainless Steel Flap --- ## 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.dk/products/65532975-pvc-plastic-check-flap-valve-self-activating-end-drainage-backwater](https://www.desertcart.dk/products/65532975-pvc-plastic-check-flap-valve-self-activating-end-drainage-backwater) --- *Product available on Desertcart Denmark* *Store origin: DK* *Last updated: 2026-05-11*