--- product_id: 354911096 title: "Internal Backwater Valve,4-F 4\" Float Model Flood-Guard for 4-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection" brand: "minimprover" price: "₹ 7698" currency: INR in_stock: true category: "Minimprover" url: https://www.desertcart.in/products/354911096-internal-backwater-valve-4-f-4-float-model-flood-guard store_origin: IN region: India --- # 4-inch float model seal Quick screwdriver install Solid brass durability Internal Backwater Valve,4-F 4" Float Model Flood-Guard for 4-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection **Brand:** minimprover **Price:** ₹ 7698 **Availability:** ✅ In Stock ## Summary > 🚨 Don’t let sewer backups catch you off guard—install the Flood-Guard and stay dry in style! ## Quick Answers - **What is this?** Internal Backwater Valve,4-F 4" Float Model Flood-Guard for 4-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection by minimprover - **How much does it cost?** ₹ 7698 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/354911096-internal-backwater-valve-4-f-4-float-model-flood-guard) ## Best For - minimprover enthusiasts ## Why This Product - Trusted minimprover brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Float Valve:** Automatically seals drains when sewer backup occurs, protecting your property instantly. - • **Unmatched Durability:** Crafted from solid brass for corrosion resistance and long-lasting flood defense. - • **Compact & Lightweight:** Designed to fit standard 4-inch flood drains without bulky hardware or hassle. - • **Effortless Installation:** Get flood protection in minutes with just a screwdriver—no plumber needed. - • **Precision Seal Technology:** Molded rubber gaskets create a slip-free, watertight barrier against sewer backflow. ## Overview The Internal Backwater Valve 4-F 4" Float Model Flood-Guard is a premium flood drain backflow preventer made from solid brass and molded rubber. Designed for 4-inch flood drains, it features an automatic float valve that seals off sewer backups, protecting your property from costly water damage. Easy to install with just a screwdriver, this compact device offers reliable, corrosion-resistant flood protection for modern homes and businesses. ## Description ★ Great Material: The main parts are made of solid brass which is durable and corrosion resistant.The gaskets are made of molded rubber which is soft and durable. ★ Adventage: ***1.Very easliy to install just need a screwdriver. ***2.Help reduce losses, and some messy cleanup work. ***3.The embeded gasket provides strong seal without slipping. ***4.Solid brass construction for unsurpassed durability. ★ Package includes: 1Pack 2" Float Model Flood-Guard. ## Features - ★ 【Material】: The main parts are made of solid brass which is durable and corrosion resistant.The gaskets are made of molded rubber which is soft and durable. - ★ 【SIZE】: 4-F 4" Float Model Flood-Guard for 4-inch Flood Drains. - ★ 【Introduction】: Flood-Guard operates like a check valve to seal off water back-up caused by overloaded sewers. Water flows normally through the drain until the sewer begins to back up. Then the Flood-Guard float rises to seal off the drain opening until the water recedes. - ★ 【Adventage】: A screwdriver and a couple of minutes are all you need to install a Flood-Guard. Once in place, it can prevent property damage and a very messy clean-up job. - ★ 【Package Include】: 1Pack 4" Float Model Flood-Guard. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08QHZ1YFQ | | ASIN | B08QHZ1YFQ | | Best Sellers Rank | #18,000 in Health ( See Top 100 in Health ) #52 in Household Drain Openers | | Brand Name | Minimprover | | Connector Type | Threaded | | Customer Reviews | 4.1 4.1 out of 5 stars (366) | | Customer reviews | 4.1 4.1 out of 5 stars (366) | | Date First Available | 17 February 2021 | | Exterior Finish | Brass | | Inlet Connection Size | 4 Inches | | Inlet Connection Type | Standard Pipe Thread | | Item model number | H087-4 | | Manufacturer | Minimprover | | Manufacturer | Minimprover | | Manufacturer Part Number | H087-4 | | Material Type | Brass Rubber | | Model Number | H087-4 | | Number of Pieces | 1 | | Number of Ports | 2 | | Outlet Connection Size | 4 Inches | | Outlet Connection Type | NPT | | Package Dimensions | 10.31 x 10.21 x 9.3 cm; 358 g | | Size | 4" Flood-Guard | | Smart Home Compatibility | Not Smart Home Compatible | | Thread Size | 4 inches | | Thread Type | Standard Pipe Thread | | UPC | 779880498541 | | Unit Count | 1.0 Count | | Valve Type | Lift Check Valve | ## Product Details - **Brand:** Minimprover - **Exterior finish:** Brass - **Inlet connection size:** 4 Inches - **Inlet connection type:** Standard Pipe Thread - **Material:** Brass Rubber ## Images ![Internal Backwater Valve,4-F 4" Float Model Flood-Guard for 4-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection - Image 1](https://m.media-amazon.com/images/I/61l9DzIp9kL.jpg) ![Internal Backwater Valve,4-F 4" Float Model Flood-Guard for 4-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection - Image 2](https://m.media-amazon.com/images/I/611i8Sj4kpL.jpg) ![Internal Backwater Valve,4-F 4" Float Model Flood-Guard for 4-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection - Image 3](https://m.media-amazon.com/images/I/71Hl7IzsSNL.jpg) ![Internal Backwater Valve,4-F 4" Float Model Flood-Guard for 4-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection - Image 4](https://m.media-amazon.com/images/I/61petjfN8-L.jpg) ![Internal Backwater Valve,4-F 4" Float Model Flood-Guard for 4-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection - Image 5](https://m.media-amazon.com/images/I/618UMumnJKL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - Minimprover Internal Backwater Valve,4-F 4" Float Model Flood-Guard for 4-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection - Dreyoo 1 Pcs 3 Inch End of Pipe Gripper Mechanical Plug, Steel Drain Pipe Cover with Galvanized Screw and Wing Nut for Outdoor Sewer Cleanout Drain - Oatey 33403 4-in. End of Pipe Gripper Mechanical Plug with Galvanized Screw and Wing Nut, 4 Inch, Red --- ## 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/354911096-internal-backwater-valve-4-f-4-float-model-flood-guard](https://www.desertcart.in/products/354911096-internal-backwater-valve-4-f-4-float-model-flood-guard) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-06-06*