--- product_id: 373957721 title: "ESHIONG 1/4\" Push to Connect One Way Check Valve for Reverse Osmosis Water Filter,NSF Certified Plastic Quick Connect RO Fittings (6 pcs)" brand: "eshiong" price: "11080 kr" currency: ISK in_stock: true reviews_count: 5 category: "Eshiong" url: https://www.desertcart.is/products/373957721-eshiong-1-4-push-to-connect-one-way-check-valve store_origin: IS region: Iceland --- # 1/4" OD Tube Quick Connect Tool-Free Push-to-Connect Installation NSF & TUV Certified Food-Grade POM ESHIONG 1/4" Push to Connect One Way Check Valve for Reverse Osmosis Water Filter,NSF Certified Plastic Quick Connect RO Fittings (6 pcs) **Brand:** eshiong **Price:** 11080 kr **Availability:** ✅ In Stock ## Summary > 🚰 Elevate Your Water Game with Leak-Free Confidence! ## Quick Answers - **What is this?** ESHIONG 1/4" Push to Connect One Way Check Valve for Reverse Osmosis Water Filter,NSF Certified Plastic Quick Connect RO Fittings (6 pcs) by eshiong - **How much does it cost?** 11080 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/373957721-eshiong-1-4-push-to-connect-one-way-check-valve) ## Best For - eshiong enthusiasts ## Why This Product - Trusted eshiong brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **DIY-Ready Installation:** Non-locking clip design means no tools, no hassle—upgrade your water system in minutes. - • **Certified Safety & Purity:** NSF, TUV, and SGS certifications ensure BPA-free, food-grade materials for your health. - • **Seamless 1/4" Quick Connect:** Effortless push-fit design for instant, leak-proof water line connections. - • **Durability Tested to the Max:** Withstands 20,000+ pressure cycles up to 35 kg without leaks or bursts. - • **Universal RO System Compatibility:** Perfect fit for reverse osmosis, beverage dispensers, refrigerators, and coffee machines. ## Overview The ESHIONG 1/4" Push to Connect One Way Check Valve is a premium, NSF-certified quick connect fitting made from BPA-free, food-grade POM plastic. Designed for reverse osmosis and other water filtration systems, it offers tool-free installation, exceptional durability tested against high pressure and fatigue, and a reliable one-way valve function to prevent backflow. Sold in convenient 6-packs, it’s the smart upgrade for any professional-grade water setup. ## Description 1、The products are made from Food-grade material which is safe, non-toxic and no odor,meet NSF Standards.They have been certified by several international authoritative testing institutions. 2、The new multi - contact design makes it more secure and reliable to connect with water tube.In destructive tests, our water purifier quick connectors performed perfectly. In the anti-fatigue and anti-pressure test, we used the continuous action of 12 kg and 35 kg pressure water hammer for 20,000 times respectively, and the products did not leak or burst.In the low-pressure test they also did not leak. 3、We have many years of experience in producing and selling water purifier fittings.We sincerely hope that our products will improve your life.4、The cracking pressure of the check valve is 7.25 PSI. Review: Perfect for air gaps on reverse osmosis systems. If you don't know already, your drain lines for the dishwasher and reverse osmosis systems need an air gap or high loop to prevent sewage from entering those systems. These check valves fit the reverse osmosis drain lines perfectly and are a good second line of defense against sewage contamination. Just be sure to use them in conjunction with a high loop. One of the valves was a little noisy at first but quieted down after a little use. Overall, these are a good value, fit well, easy to install, and serve their purpose well. Review: I tried hooking one of these up backwards and my flow stopped. Hooking it in the correct way the water seems to flow the same as before. I call this a success. If it lasts over a year then great! If not then well that's what I get for buying cheap. I may re-review if I notice they stop working at some point. Side note: Not sure why people think they can supply enough pressure with wee little human lungs. Obviously the psi in a water hose is going to be higher than a set of lungs can push. If someone tries to say they cant blow through it and gives a bad review, ignore it and keep scrolling. If you're not supplying measurable data and saying its crap then do us all a favor and stay out of the reviews. Thanks. ## Features - Material:POM(Polyoxymethylene) . Food-grade material, BPA free，NSF、TUV、SGS certificated etc. - Specification:Straight 1/4" inch To 1/4" inch OD Tube quick connect One-way Valve.Standard fitting for about 6.4mm water filter systems tube. - Installation:Non-Locking Clip design offers an easy DIY installation without any tools .Push fit fittings ,100% leak free. - Package Quantity:6 pack - Application:Apply to reverse osmosis water filter system,beverage dispensing system,refrigerator,ice maker,coffee machine,etc. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B088DDX593 | | Brand | ESHIONG | | Colour | White&blue | | Connector Type | Quick Connect/Push Fit | | Customer Reviews | 4.5 4.5 out of 5 stars (255) | | Exterior Finish | Plastic | | Item Dimensions | 17 x 86 x 74 millimetres | | Item Weight | 0.07 Pounds | | Manufacturer | ESHIONG | | Material | Plastic | | Model Number | Eshiong-dxf-22 | | Number of Pieces | 6 | | Size | 1/4'' Inch | | Thread Size | 0.25 inch | | Thread Type | NPT | | UPC | 781159625350 | | Unit Count | 1.0 count | ## Product Details - **Brand:** ESHIONG - **Colour:** White&blue - **Connector type:** Quick Connect/Push Fit - **Exterior finish:** Plastic - **Item dimensions L x W x H:** 17 x 86 x 74 millimetres - **Item weight:** 0.07 Pounds - **Material:** Plastic - **Size:** 1/4'' Inch - **Thread size:** 0.25 inch - **Thread type:** NPT ## Images ![ESHIONG 1/4" Push to Connect One Way Check Valve for Reverse Osmosis Water Filter,NSF Certified Plastic Quick Connect RO Fittings (6 pcs) - Image 1](https://m.media-amazon.com/images/I/41bQVSg5MiL.jpg) ![ESHIONG 1/4" Push to Connect One Way Check Valve for Reverse Osmosis Water Filter,NSF Certified Plastic Quick Connect RO Fittings (6 pcs) - Image 2](https://m.media-amazon.com/images/I/31-lXJejprS.jpg) ![ESHIONG 1/4" Push to Connect One Way Check Valve for Reverse Osmosis Water Filter,NSF Certified Plastic Quick Connect RO Fittings (6 pcs) - Image 3](https://m.media-amazon.com/images/I/61S3wjRmmLS.jpg) ![ESHIONG 1/4" Push to Connect One Way Check Valve for Reverse Osmosis Water Filter,NSF Certified Plastic Quick Connect RO Fittings (6 pcs) - Image 4](https://m.media-amazon.com/images/I/71BmvHj2t0L.jpg) ![ESHIONG 1/4" Push to Connect One Way Check Valve for Reverse Osmosis Water Filter,NSF Certified Plastic Quick Connect RO Fittings (6 pcs) - Image 5](https://m.media-amazon.com/images/I/61oeBYnf9xL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by L***C on 27 January 2026* Perfect for air gaps on reverse osmosis systems. If you don't know already, your drain lines for the dishwasher and reverse osmosis systems need an air gap or high loop to prevent sewage from entering those systems. These check valves fit the reverse osmosis drain lines perfectly and are a good second line of defense against sewage contamination. Just be sure to use them in conjunction with a high loop. One of the valves was a little noisy at first but quieted down after a little use. Overall, these are a good value, fit well, easy to install, and serve their purpose well. ### ⭐⭐⭐⭐⭐ Review *by J***N on 28 August 2024* I tried hooking one of these up backwards and my flow stopped. Hooking it in the correct way the water seems to flow the same as before. I call this a success. If it lasts over a year then great! If not then well that's what I get for buying cheap. I may re-review if I notice they stop working at some point. Side note: Not sure why people think they can supply enough pressure with wee little human lungs. Obviously the psi in a water hose is going to be higher than a set of lungs can push. If someone tries to say they cant blow through it and gives a bad review, ignore it and keep scrolling. If you're not supplying measurable data and saying its crap then do us all a favor and stay out of the reviews. Thanks. ### ⭐⭐⭐⭐⭐ Review *by A***N on 13 February 2026* Work well. Good buy. One way flow valve easy fit snug. ## Frequently Bought Together - ESHIONG 1/4" Push to Connect One Way Check Valve for Reverse Osmosis Water Filter,NSF Certified Plastic Quick Connect RO Fittings (6 pcs) - DIGITEN 1/4" Automatic Shut-Off Valve with Quick-Connect Fittings For RO Reverse Osmosis(Pack of 2) - Malida 1/4 inch O.D. Length 32.8ft(10 meters) RO Water Tubing, Hose Pipe for RO Water purifiers System,+ 1/4 O.D quick connector 10pcs --- ## 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.is/products/373957721-eshiong-1-4-push-to-connect-one-way-check-valve](https://www.desertcart.is/products/373957721-eshiong-1-4-push-to-connect-one-way-check-valve) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-06-24*