--- product_id: 81064965 title: "Leak Stop Valve for Reverse Osmosis & Under Sink Water Filtration - Automatic Water Shut-Off Valve for Water Filtration Systems" brand: "express water" price: "€ 35.02" currency: EUR in_stock: true url: https://www.desertcart.hr/products/81064965-leak-stop-valve-for-reverse-osmosis-and-under-sink-water store_origin: HR region: Croatia --- # Instant leak detection Automatic water shut-off Universal 1/4” quick-connect fittings Leak Stop Valve for Reverse Osmosis & Under Sink Water Filtration - Automatic Water Shut-Off Valve for Water Filtration Systems **Brand:** express water **Price:** € 35.02 **Availability:** βœ… In Stock ## Summary > πŸ’§ Stop leaks before they start β€” your water’s silent guardian! ## Quick Answers - **What is this?** Leak Stop Valve for Reverse Osmosis & Under Sink Water Filtration - Automatic Water Shut-Off Valve for Water Filtration Systems by express water - **How much does it cost?** € 35.02 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/81064965-leak-stop-valve-for-reverse-osmosis-and-under-sink-water) ## Best For - express water enthusiasts ## Why This Product - Trusted express water brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Durable & Dependable:** Crafted from robust polypropylene for long-lasting leak protection you can trust. - β€’ **Versatile Compatibility:** Works seamlessly with RO systems, coffee machines, ice makers, refrigerators, and more. - β€’ **Bonus Leak Pads Included:** Comes with 3 reusable leak detection pads and mounting screws for multiple setups. - β€’ **Plug & Play Installation:** Universal 1/4” quick-connect fittings make setup effortless and tool-free. - β€’ **Leak Detection in a Flash:** Stops water flow immediately upon moisture detection to prevent costly damage. ## Overview The Express Water Leak Stop Valve is a compact, automatic shut-off valve designed to detect moisture and instantly stop water flow, protecting your reverse osmosis and under-sink filtration systems from leaks. Featuring universal 1/4” quick-connect fittings, durable polypropylene construction, and included leak detection pads, it offers easy installation and reliable, multi-application leak protection for a variety of household water appliances. ## Description Full description not available ## Features - Leak Stop Valve: Enjoy peace of mind with your under sink reverse osmosis water filtration system with the help from Express Water’s leak stop valve.Fast Acting: This water valve is designed to shut off incoming water supply as soon as any moisture is detected. - Multi-Use Leak Detection Valve: The leak stop valve is compatible with any system and application. Use this water valve on Reverse Osmosis Systems, ATO, Coffee Machine, Water Filtration System, Ice Maker, Refrigerator Kit, Water Purifiers, and More - Easy to Install Shut Off Valve: Express Water’s leak stop valves designed to universal standard size and are easy to install with your water filtration system with quick-connect ¼” fittings. Included Components: Express Water leak stop valves come with 2 mounting screws for easy installation and 3 leak detection pads for multiple uses of your leak detection valve - Make The Reliable Choice: Express Water water leak valves are made to last. Choose the system that lasts longer to give you the best value.Save Time and Money: Invest in quality accessories for your Express Water Filtration Systems to efficiently and effectively filter your water. - On Demand Support: Support from experts who can answer any of your questions about your water shut off valve. ## Technical Specifications | Specification | Value | |---------------|-------| | Material | Polypropylene (PP) | | Product Dimensions | 3"D x 2"W x 4"H | | Item Weight | 1.1 Ounces | | Product Benefits | Automatic Shut Off When Leak Detected | | Brand | EXPRESS WATER | | UPC | 641990962772 | | Global Trade Identification Number | 00641990962772 | | Unit Count | 1.0 Count | | Number of Items | 1 | | Manufacturer | Express Water | | Part Number | PRTLKS14Q | | Item Weight | 1.1 ounces | | Item model number | PRTLKS14Q | | Is Discontinued By Manufacturer | No | | Size | Small | | Color | White | | Power Source | Corded electric | | Item Package Quantity | 1 | | Measurement System | inch | | Included Components | Leak Stop Valve | | Batteries Included? | No | | Batteries Required? | No | ## Product Details - **Material:** Polypropylene (PP) - **Product Dimensions:** 3"D x 2"W x 4"H - **Item Weight:** 1.1 Ounces - **Product Benefits:** Automatic Shut Off When Leak Detected - **Brand:** EXPRESS WATER ## Images ![Leak Stop Valve for Reverse Osmosis & Under Sink Water Filtration - Automatic Water Shut-Off Valve for Water Filtration Systems - Image 1](https://m.media-amazon.com/images/I/61h9BCuFSkL.jpg) ## Questions & Answers **Q: Anyone have any experience of this shutoff device actually successfully shuting off the water after leaked developed, preventing flooding?** A: I tested it and it works perfectly. But the shut off needs to be near the potential leak. If its too far away it wont get wet enough and wont expand the disk. Its a great invention. Get some extra disks and try yourself to make sure the set up is positioned well. **Q: My tubing is 3/8, would this valve work?** A: This accepts 1/4” tube so no it won’t work. Unless you get two 3/8” to 1/4” couplers and some 1/4” tube then you can make it work. **Q: For an under sink filter system, does this include any tubing in case your feed supply line is too short to splice device into?** A: No tubing is included **Q: Where do I buy replacement expansion tablets for the valve** A: Amazon --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/81064965-leak-stop-valve-for-reverse-osmosis-and-under-sink-water](https://www.desertcart.hr/products/81064965-leak-stop-valve-for-reverse-osmosis-and-under-sink-water) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-20*