--- product_id: 685183529 title: "Floor Drain Backflow Preventer, Universal Fit for 3.2-4 Inch Waste Lines, Toilet Flanges Wax Rings, One-Way Valve Plug Stops Sewer Gas, for Home and Restaurant Use" brand: "kastwave" price: "COP 76786" currency: COP in_stock: true reviews_count: 4 url: https://www.desertcart.co/products/685183529-floor-drain-backflow-preventer-universal-fit-for-3-2-4 store_origin: CO region: Colombia --- # One-way valve stops sewer gas backflow Universal fit, easy DIY installation Thick premium wax ring for leak-proof seal Floor Drain Backflow Preventer, Universal Fit for 3.2-4 Inch Waste Lines, Toilet Flanges Wax Rings, One-Way Valve Plug Stops Sewer Gas, for Home and Restaurant Use **Brand:** kastwave **Price:** COP 76786 **Availability:** ✅ In Stock ## Summary > 🚽 Stop leaks, block odors, and upgrade your bathroom game! ## Quick Answers - **What is this?** Floor Drain Backflow Preventer, Universal Fit for 3.2-4 Inch Waste Lines, Toilet Flanges Wax Rings, One-Way Valve Plug Stops Sewer Gas, for Home and Restaurant Use by kastwave - **How much does it cost?** COP 76786 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/685183529-floor-drain-backflow-preventer-universal-fit-for-3-2-4) ## Best For - kastwave enthusiasts ## Why This Product - Trusted kastwave brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **DIY Friendly:** Simple installation saves time and hassle - • **Built to Last:** Durable materials for long-term reliability - • **Seal Like a Pro:** Thick wax ring ensures zero leaks and odor escape - • **Freshness Guaranteed:** Anti-backflow valve keeps your space smelling clean - • **Universal Compatibility:** Fits 3.2-4 inch waste lines and toilet flanges seamlessly ## Overview The KASTWAVE Floor Drain Backflow Preventer features a thick wax ring and a built-in one-way valve to prevent sewer gas and water backflow. Designed for universal fit on 3.2-4 inch waste lines, it offers easy installation and durable performance, making it ideal for both home and restaurant plumbing needs. ## Features - 🧼 【Thick Wax Ring】 Crafted with a premium and thick wax bowl ring, our product guarantees superior adhesion and forms a tight seal to prevent water leaks and odors from escaping. - 🔧 【Easy Installation】 Our toilet flanges are engineered for straightforward and hassle-free installation. The user-friendly design allows anyone to easily install and replace the flange and wax ring, saving time and effort. - 🔄 【Anti-Backflow Design】 The built-in backflow prevention valve effectively stops any water backflow, eliminating unpleasant odors and maintaining a fresh bathroom environment. - 🛠️ 【Reliable and Durable】 Our Toilet Bowl Wax Ring Gaskets are constructed from high-quality materials, ensuring long-lasting performance and durability. - 🚽 【Perfect Seal for Toilet Bowl】 Our toilet flange wax rings offer a dependable and watertight seal for both toilet installation and repair projects. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0DP3XCQ5D | | Best Sellers Rank | #4,683 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #1 in Toilet Wax Rings | | Brand Name | KASTWAVE | | Color | Yellow | | Customer Reviews | 4.0 4.0 out of 5 stars (16) 4.0 out of 5 stars | | Item Weight | 0.36 Kilograms | | Manufacturer | KASTWAVE | | Manufacturer Part Number | RV7960 | | Material Type | Plastic | | Number Of Items | 1 | | Unit Count | 1 Count | | Upc | 764461239057 | ## Images ![Floor Drain Backflow Preventer, Universal Fit for 3.2-4 Inch Waste Lines, Toilet Flanges Wax Rings, One-Way Valve Plug Stops Sewer Gas, for Home and Restaurant Use - Image 1](https://m.media-amazon.com/images/I/61Nsmv+MWhL.jpg) ![Floor Drain Backflow Preventer, Universal Fit for 3.2-4 Inch Waste Lines, Toilet Flanges Wax Rings, One-Way Valve Plug Stops Sewer Gas, for Home and Restaurant Use - Image 2](https://m.media-amazon.com/images/I/71ZAPGlct-L.jpg) ![Floor Drain Backflow Preventer, Universal Fit for 3.2-4 Inch Waste Lines, Toilet Flanges Wax Rings, One-Way Valve Plug Stops Sewer Gas, for Home and Restaurant Use - Image 3](https://m.media-amazon.com/images/I/61M1XsznuXL.jpg) ![Floor Drain Backflow Preventer, Universal Fit for 3.2-4 Inch Waste Lines, Toilet Flanges Wax Rings, One-Way Valve Plug Stops Sewer Gas, for Home and Restaurant Use - Image 4](https://m.media-amazon.com/images/I/614rNQCtJtL.jpg) ![Floor Drain Backflow Preventer, Universal Fit for 3.2-4 Inch Waste Lines, Toilet Flanges Wax Rings, One-Way Valve Plug Stops Sewer Gas, for Home and Restaurant Use - Image 5](https://m.media-amazon.com/images/I/71xbHtyJPBL.jpg) ## Customer Reviews ### ⭐⭐ 👍 *by on Reviewed in the United Arab Emirates 23 August 2025* 👍 ### ⭐⭐⭐⭐⭐ Best *by on Reviewed in the United Arab Emirates 27 February 2025* The best for it’s price ### ⭐⭐⭐⭐⭐ مميز جداً *by on Reviewed in Saudi Arabia 24 April 2026* ممتاز جداً وأفادني كثير ، لكن للأسف اردت طلب كمية أخرى وأصبح غير متوفر 😢 ## Frequently Bought Together - KASTWAVE Floor Drain Backflow Preventer, Universal Fit for 3.2-4 Inch Waste Lines, Toilet Flanges Wax Rings, One-Way Valve Plug Stops Sewer Gas, for Home and Restaurant Use - OSALADI 4pcs Floor Drain Odor Proof Core Drain Guard Sewer Backflow Preventer Backwater Valve Insect Proof Drainage and Backflow Automatic Closing to Odor - Shower Drain Floor Drain Backflow Preventer Magnetic Levitation One-Way Drain Valve Fast Drainage Deodorant Design Insert Drain Plug Fit for Tube Depth 2.56-4.13in (Caliber（2-3.9in）,Depth 4.13in) --- ## 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/products/685183529-floor-drain-backflow-preventer-universal-fit-for-3-2-4](https://www.desertcart.co/products/685183529-floor-drain-backflow-preventer-universal-fit-for-3-2-4) --- *Product available on Desertcart Colombia* *Store origin: CO* *Last updated: 2026-08-26*