--- product_id: 639886006 title: "Cinsda 4\" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow" brand: "cinsda" price: "R1965" currency: ZAR in_stock: true category: "Cinsda" url: https://www.desertcart.co.za/products/639886006-cinsda-4-pvc-backwater-valve-4-inch-back-flow-preventer store_origin: ZA region: South Africa --- # Watertight EPDM seals 4-inch PVC compatibility Corrosion & heat resistant Cinsda 4" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow **Brand:** cinsda **Price:** R1965 **Availability:** ✅ In Stock ## Summary > 🚫💧 Stop Backflow Before It Starts – Protect Your Space with Confidence! ## Quick Answers - **What is this?** Cinsda 4" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow by cinsda - **How much does it cost?** R1965 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/639886006-cinsda-4-pvc-backwater-valve-4-inch-back-flow-preventer) ## Best For - cinsda enthusiasts ## Why This Product - Trusted cinsda brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision 4" Fit:** Seamlessly integrates with standard PVC drainage systems for hassle-free installation. - • **Durable PVC Build:** Engineered from high-impact, corrosion-resistant PVC to withstand harsh environments and ensure longevity. - • **Versatile Application:** Ideal for residential and industrial sewage systems, protecting your property from costly backflow damage. - • **Effortless Installation:** Solvent-weldable design enables quick, secure, and watertight connections without specialized tools. - • **Leak-Proof Seal Technology:** Thickened rubber rings and EPDM seals guarantee zero backflow and water leakage. ## Overview The Cinsda 4" PVC Backwater Valve is a robust, corrosion-resistant valve designed to prevent sewage backflow in drainage systems. Made from durable PVC with watertight EPDM seals, it ensures reliable protection against water and sewage backflow. Easy to install via solvent welding, it fits standard 4-inch PVC pipes and is suitable for both residential and industrial applications. ## Description Wide range of uses: Made of hard PVC and corrosion resistance. Perfect for indoor and outdoor use, drainage and sewer piping systems; patio, lawn, garden, and septic tank piping systems etc. Installed in the PVC drain and sewer pipe system. ## Features - Designed for connecting 4-inch PVC drains in the drainage system, this valve prevents the backflow of water in the pipeline due to pressure reduction or other potential causes. - The backwater valve is made of sturdy PVC for high impact strength and resistance to heat and corrosion. - Our back flow preventer valve can be solvent-welded for a watertight connection. The installation is simple and efficient. - Thickened rubber rings embedded in the water stop baffle guarantee a watertight seal, and the access cover is also sealed with EPDM rubber to prevent water leakage. - The backflow valve, as part of the DWV system, is suitable for connecting PVC sewers and drains. Ideal for sewage disposal in household and certain industries, it prevents sewer backflow. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D3QTWTCR | | Best Sellers Rank | #21,971 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #555 in Pipe Fittings | | Brand Name | Cinsda | | Color | White | | Connector Type | Tee | | Customer Reviews | 4.7 4.7 out of 5 stars (94) | | Exterior Finish | PVC | | Included Components | 4" Backwater Valve | | Item Dimensions | 9.8 x 7 x 6.78 inches | | Item Type Name | Backwater Valve | | Item Weight | 1.68 Kilograms | | Manufacturer | Cinsda | | Manufacturer Part Number | 4IBVBD | | Material Type | Polyvinyl Chloride | | Model Number | 4IBVBD | | Number of Pieces | 1 | | Size | 4 Inch | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Cinsda - **Color:** White - **Connector Type:** Tee - **Exterior Finish:** PVC - **Item Weight:** 1.68 Kilograms - **Item dimensions L x W x H:** 9.8 x 7 x 6.78 inches - **Manufacturer:** Cinsda - **Material:** Polyvinyl Chloride - **Number of Pieces:** 1 - **Size:** 4 Inch ## Images ![Cinsda 4" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow - Image 1](https://m.media-amazon.com/images/I/61VNt5B7hVL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - Cinsda 4" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow - Cinsda 3" PVC Backwater Valve, 3 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow - Tondiamo Backwater Valve Drain Backflow Preventer Valve Prevent Sewage and Rainwater from Flowing Back(White PVC,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.za/products/639886006-cinsda-4-pvc-backwater-valve-4-inch-back-flow-preventer](https://www.desertcart.co.za/products/639886006-cinsda-4-pvc-backwater-valve-4-inch-back-flow-preventer) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-07-21*