--- product_id: 54649129 title: "PVC Plastic Check Sewage Drain Non-Return Double Flap Valve Backwater Prevented 160mm" brand: "plumbing4home" price: "₹ 54102" currency: INR in_stock: true category: "Plumbing4 Home" url: https://www.desertcart.in/products/54649129-pvc-plastic-check-sewage-drain-non-return-double-flap-valve store_origin: IN region: India --- # 160mm pipe fit Self-cleaning design Double flap security PVC Plastic Check Sewage Drain Non-Return Double Flap Valve Backwater Prevented 160mm **Brand:** plumbing4home **Price:** ₹ 54102 **Availability:** ✅ In Stock ## Summary > 🛠️ Secure your pipes, secure your peace of mind! ## Quick Answers - **What is this?** PVC Plastic Check Sewage Drain Non-Return Double Flap Valve Backwater Prevented 160mm by plumbing4home - **How much does it cost?** ₹ 54102 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/54649129-pvc-plastic-check-sewage-drain-non-return-double-flap-valve) ## 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 - • **Modular safety upgrade:** Expandable multi-flap design lets you add extra valves for enhanced protection tailored to your building’s needs. - • **Rodent-resistant barrier:** Chromium-nickel guards prevent rodents from invading through sewage lines—keep your building pest-free. - • **Smooth, sediment-free flow:** Innovative self-cleaning internal surfaces ensure uninterrupted sewage flow without clogs or buildup. - • **Floodproof your lower floors:** Double-flap valve blocks backflow from stormwater and sewage, protecting your space from costly water damage. - • **Durable, chemical-resistant build:** Made from high-quality polypropylene and fiberglass-reinforced parts, designed to withstand hot, aggressive sewage up to 95°C. ## Overview The KARMAT 160mm PVC double-flap backwater valve is a robust, code-compliant solution designed to prevent sewage backflow and rodent intrusion in lower-floor plumbing systems. Featuring corrosion-resistant materials, a self-cleaning profile, and modular flaps, it ensures reliable, maintenance-friendly protection against flooding and pests. ## 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. Karmat backwater valves are devices in which the flaps are equipped with chromium - nickel protecting guards securing the flap and gasket against rats and its sliding down during sewage flow. It is a very important feature in places particularly exposed to rodents’ attempts to pass through. Innovative construction of multi-flap valves enables undisturbed sewage flow while preserving complete and unnarrowed clearance of pipes in which they are installed. Unlike other devices of this type available in the market the Karmat double flap backwater valves there are no inserts installed inside which may disturb or obstruct sewage flow. Double flap backwater valves have smooth internal surfaces suitably profiled which causes its self-cleaning and prevents collection of sediments. Module construction of multi-flap valves enables in special cases, as required by clients, to extend devices with additional, independent flaps which greatly increase buildings safety. 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 - Installed in 160mm 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; - Double-flap backwater valves offer a greater choice of security devices ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00QVHHTXW | | Best Sellers Rank | 244,451 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 1,918 in Pipes 2,422 in Drainage | | Brand | PLUMBING4HOME | | Connector Type | Flanged | | Exterior Finish | Plastic | | Exterior finish | Plastic | | Inlet Connection Size | 160 Millimeters | | Inlet Connection Type | Flange | | Inlet connection size | 160 Millimeters | | Inlet connection type | Flange | | Item Weight | 4 Kilograms | | Manufacturer | Karmat | | Material | Plastic, Polyvinyl Chloride (PVC) | | Number of Ports | 2 | | Outlet Connection Size | 160 Millimeters | | Outlet Connection Type | Flange | | Outlet connection type | Flange | | Part Number | 451b | | Set Name | 160 mm check valve (2-port) | | Specification Met | CE, WRAS | | Unit Count | 1.0 count | | Valve Type | Lift Check Valve | ## Product Details - **Brand:** PLUMBING4HOME - **Exterior finish:** Plastic - **Inlet connection size:** 160 Millimeters - **Inlet connection type:** Flange - **Material:** Plastic, Polyvinyl Chloride (PVC) - **Number of Packs:** 1 - **Number of ports:** 2 - **Outlet connection size:** 160 Millimeters - **Outlet connection type:** Flange - **Specification met:** CE, WRAS ## Images ![PVC Plastic Check Sewage Drain Non-Return Double Flap Valve Backwater Prevented 160mm - Image 1](https://m.media-amazon.com/images/I/41+KwnFWWbL.jpg) ![PVC Plastic Check Sewage Drain Non-Return Double Flap Valve Backwater Prevented 160mm - Image 2](https://m.media-amazon.com/images/I/71A8W1upj+L.jpg) ![PVC Plastic Check Sewage Drain Non-Return Double Flap Valve Backwater Prevented 160mm - Image 3](https://m.media-amazon.com/images/I/81PQLsQ8s5L.jpg) ![PVC Plastic Check Sewage Drain Non-Return Double Flap Valve Backwater Prevented 160mm - Image 4](https://m.media-amazon.com/images/I/61XlnR5QLLL.jpg) ## Frequently Bought Together - PVC Plastic Check Sewage Drain Non-Return Double Flap Valve Backwater Prevented 160mm - 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.in/products/54649129-pvc-plastic-check-sewage-drain-non-return-double-flap-valve](https://www.desertcart.in/products/54649129-pvc-plastic-check-sewage-drain-non-return-double-flap-valve) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-07-25*