--- product_id: 55321404 title: "Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 200mm" brand: "plumbing4home" price: "฿31648" currency: THB in_stock: true category: "Plumbing4 Home" url: https://www.desertcart.co.th/products/55321404-horizontal-pvc-plastic-sewage-drain-check-non-return-valve-backwater store_origin: TH region: Thailand --- # High-grade PVC plastic Flood & backflow protection 200mm pipe fit Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 200mm **Brand:** plumbing4home **Price:** ฿31648 **Availability:** ✅ In Stock ## Summary > 🛠️ Secure your space, stop the flood—because your lower floors deserve the best! ## Quick Answers - **What is this?** Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 200mm by plumbing4home - **How much does it cost?** ฿31648 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/55321404-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 - • **Built to Last:** Crafted from chemical-resistant, high-quality PVC plastic that withstands hot sewage up to 95°C. - • **Rodent-Proof Seal:** Innovative gasket design prevents rodents from invading your building through sewage lines. - • **Effortless Operation:** Fully automatic, no power needed—installation and maintenance are simple for any user. - • **Smooth Flow Guarantee:** Interior profiling prevents sediment buildup, ensuring uninterrupted sewage flow and durability. - • **Ultimate Flood Defense:** Automatically blocks sewage backflow to protect your lower floors from costly water damage. ## Overview The KARMAT 200mm Horizontal PVC Backwater Valve is a CE-certified, automatic non-return valve designed to prevent sewage and stormwater backflow in lower-floor rooms. Made from durable, chemical-resistant PVC and fiberglass-reinforced components, it offers rodent-proof sealing and smooth internal flow to protect buildings from flooding and contamination without requiring power or complex maintenance. ## 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. ## Features - KARMAT Backwater Valves effectively secure any rooms located on the lower floors; - Installed in 200mm 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 | B00IKMAJJW | | Batteries Required? | No | | Batteries included? | No | | Best Sellers Rank | 233,815 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 1,974 in Pipes | | Certification | CE | | Customer Reviews | 5.0 5.0 out of 5 stars (1) | | Date First Available | 11 Dec. 2014 | | Item Package Quantity | 1 | | Item Weight | 3.6 kg | | Manufacturer | Karmat | | Manufacturer reference | 450c | | Material | Pvc,Plastic | | Part Number | 450c | ## Product Details - **Material:** Polyvinyl Chloride (PVC), Plastic - **Brand:** PLUMBING4HOME - **Valve type:** Check Valve - **Manufacturer:** Karmat ## Images ![Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 200mm - Image 1](https://m.media-amazon.com/images/I/51LHIT8wArL.jpg) ![Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 200mm - Image 2](https://m.media-amazon.com/images/I/717J1jtQrBL.jpg) ![Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 200mm - Image 3](https://m.media-amazon.com/images/I/71+pdVb5-+L.jpg) ![Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 200mm - Image 4](https://m.media-amazon.com/images/I/71ExXeRhoTL.jpg) ## Frequently Bought Together - Horizontal PVC Plastic Sewage Drain Check Non-Return Valve Backwater Prevented 200mm - Retro Fit 110mm 4 inch Drain Non Return Valve with Stainless Steel Flap - Buffalo Pest Control Water and Rodent Non Return Valve 110mm / 4 inch --- ## 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.co.th/products/55321404-horizontal-pvc-plastic-sewage-drain-check-non-return-valve-backwater](https://www.desertcart.co.th/products/55321404-horizontal-pvc-plastic-sewage-drain-check-non-return-valve-backwater) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-05-14*