--- product_id: 59859435 title: "MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet" brand: "multiflap" price: "254.35 DT" currency: TND in_stock: true category: "Multiflap" url: https://www.desertcart.tn/products/59859435-mf1-arb1-anti-cross-flow-and-rodent-barrier-valve-toilet store_origin: TN region: Tunisia --- # light-blocking black finish 4-inch universal fit rodent-proof sealed valve MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet **Brand:** multiflap **Price:** 254.35 DT **Availability:** ✅ In Stock ## Summary > 🚽 Seal out pests, seal in peace of mind! ## Quick Answers - **What is this?** MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet by multiflap - **How much does it cost?** 254.35 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/59859435-mf1-arb1-anti-cross-flow-and-rodent-barrier-valve-toilet) ## Best For - multiflap enthusiasts ## Why This Product - Trusted multiflap brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek Black Finish:** Matte black reduces light emission from the bowl, deterring pests and enhancing bathroom aesthetics. - • **Universal 4-inch Fit:** Seamlessly integrates with most toilet pan connectors for hassle-free installation. - • **Smart Swing Check Valve:** Automatically opens on flush and seals tight when idle, maintaining optimal flow control. - • **Rodent-Resistant Barrier:** Innovative closed-door design blocks vermin entry under no-flow conditions, protecting your home. - • **Anti Cross-Flow Technology:** Prevents backflow and cross-flow in horizontal pipes, ensuring hygienic waste management. ## Overview The MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve is a 4-inch polypropylene swing check valve designed to fit most toilets with rear waste outlets. Featuring a black finish that blocks light to deter pests, it prevents backflow and cross-flow in horizontal pipes while providing a secure barrier against rodents. Its smart flap valve opens only during flushing, ensuring hygienic and efficient waste flow with added protection against vermin intrusion. ## Description Free delivery and returns on all eligible orders. Shop MultiFlap MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet. ## Features - Fits most toilets where the waste outlet is behind the toilet - Fits directly on to the toilet pan connector - Black colouring reduces light from the toilet bowl which is known to attract pests - Provides a closed door to rodents in the branch discharge pipe under no-flow conditions - Reduces backflow and prevents cross-flow in horizontally-opposed connections - The MultiFlap valve remains closed under static conditions and opens when there is flow through the valve, e.g. when the toilet is flushed. The closed valve provides an obstruction for vermin who may attempt to enter the toilet. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01819CQ5I | | Best Sellers Rank | 202,964 in DIY & Tools ( See Top 100 in DIY & Tools ) 481 in Drainage 2,357 in Pipes, Pipe Fittings & Accessories | | Brand | Multiflap | | Connector Type | Flanged | | Customer Reviews | 4.4 4.4 out of 5 stars (38) | | Exterior Finish | Plastic | | Inlet Connection Size | 4 Inches | | Inlet Connection Type | Flanged | | Manufacturer | Multiflap | | Material | Polypropylene (PP) | | Model Number | MF1 ARB1 | | Number of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | Number of Ports | 2 | | Outlet Connection Size | 4 Inches | | Outlet Connection Type | Flange | | Part Number | MF1 | | Set Name | 1 unit | | Size | 4 inches | | Specification Met | CE | | Thread Size | 4 inches | | Thread Type | NPT | | UPC | 641243237336 | | Unit Count | 1.0 count | | Valve Type | Swing Check Valve | ## Product Details - **Brand:** Multiflap - **Exterior finish:** Plastic - **Inlet connection size:** 4 Inches - **Inlet connection type:** Flanged - **Material:** Polypropylene (PP) - **Number of Packs:** 1 - **Number of ports:** 2 - **Outlet connection size:** 4 Inches - **Outlet connection type:** Flange - **Specification met:** CE ## Images ![MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet - Image 1](https://m.media-amazon.com/images/I/31PZQwuNSpL.jpg) ![MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet - Image 2](https://m.media-amazon.com/images/I/51jJAHR3w3L.jpg) ![MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet - Image 3](https://m.media-amazon.com/images/I/41VcBvEPpmL.jpg) ## Questions & Answers **Q: What diameter pipe is this for?** A: 4" pipe ## Frequently Bought Together - MultiFlap MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet - Flexible Toilet Pan Connector Universal WC Flexi Slinky Waste Soil Pipe 260mm-500mm --- ## 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.tn/products/59859435-mf1-arb1-anti-cross-flow-and-rodent-barrier-valve-toilet](https://www.desertcart.tn/products/59859435-mf1-arb1-anti-cross-flow-and-rodent-barrier-valve-toilet) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-11-10*