--- product_id: 63239442 title: "Check valve 1/2\"inch-PEX Plastic Barb X Barb, \"PTFE\" Ball Stop with \"Viton O Ring\" for Positive Fluid Stop." brand: "i flow h2o" price: "8 kr" currency: DKK in_stock: false url: https://www.desertcart.dk/products/63239442-check-valve-1-2inch-pex-plastic-barb-x-barb-ptfe store_origin: DK region: Denmark --- # 80 PSI max pressure One-way anti-backflow design 200°F max temp tolerance Check valve 1/2"inch-PEX Plastic Barb X Barb, "PTFE" Ball Stop with "Viton O Ring" for Positive Fluid Stop. **Brand:** i flow h2o **Price:** 8 kr **Availability:** ❌ Out of Stock ## Summary > 🚀 Elevate your flow game with the ultimate no-backflow check valve! ## Quick Answers - **What is this?** Check valve 1/2"inch-PEX Plastic Barb X Barb, "PTFE" Ball Stop with "Viton O Ring" for Positive Fluid Stop. by i flow h2o - **How much does it cost?** 8 kr with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/63239442-check-valve-1-2inch-pex-plastic-barb-x-barb-ptfe) ## Best For - i flow h2o enthusiasts ## Why This Product - Trusted i flow h2o brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile & Durable:** NSF & UPC certified, lead-free plastic body withstands harsh fluids from potable water to diesel fuel. - • **Risk-Free Reliability:** Backed by a 3-year buyback warranty—because your system deserves the best protection. - • **Effortless Installation:** Barb x Barb push-in connection with clear flow direction arrows—secure with clamps or crimp rings in seconds. - • **Unrivaled Fluid Control:** PTFE solid ball + Viton O-ring deliver a flawless, corrosion-resistant seal that stops backflow instantly. - • **Engineered for Maximum Flow:** Dynamic Max-Flo-Chek™ design ensures zero fluid resistance for peak system efficiency. ## Overview This premium 1/2" PEX plastic check valve features a PTFE solid ball and Viton O-ring for superior anti-backflow performance. Rated for up to 80 PSI and 200°F, it’s NSF and UPC certified, corrosion-resistant, and ideal for potable water, marine, HVAC, and fuel lines. Its innovative Max-Flo-Chek™ design maximizes flow with zero resistance, while the durable plastic body ensures long-lasting reliability. Easy to install with barb connections and backed by a 3-year buyback warranty, it’s the professional’s choice for positive fluid stop. ## Description Premium USA Quality Plastic 1/2”inch PEX Check Valve Posi-Seal Anti-Back Flow Its high strength super advanced “PTFE” solid ball and a “Viton/FKM”-“O”- Ring encased by a poly-alloy durable Plastic that can withstand operating pressures of up to 80psi and high temperatures of up to 200F. Perfect solution for conditions in-line where Brass, Aluminum and copper create corrosion conditions that affects or compromises the quality of fluid flowing. Engineered Dynamic Design Called “Max-Flo-Chek” tm. This design allows for maximum flow in-line, when positive moving fluid flow occurs, the ball moves freely to a center cavity away from sealing “O” ring allowing for maximum flow all around the ball with zero fluid resistance. On an instant, negative or reverse fluid flow occurs, fluid pushes ball back into its posi-seal “O” ring for a solid stop. In this innovative dynamic design there are no hinged flaps, pins, screws, springs, diaphragms, rubber to restrict flow, malfunction, break or contaminate. To be used in vertical configuration. ## Features - ✅ PROBLEM IT SOLVES; Its an in-line one-way automatic valve stop, which prevents liquid-fluid from back-flowing, returning or loss of prime in a water, recirculating sys or fuel line. valvula de retencion agua plastico. - ✅ IN-LINE USES; Can safely be used in Potable water, Fish aquarium water filter pumps, Pex tubing, Boat marine, RV, Hydroponics grow, Hydronic heating, and /or harsh fluids like fuel, diesel, oils and mild chemicals. NOT 4 POND WATER USE. - ✅ COMPLIANT; NSF listed, meets UPC, IPC and cUPC standards, ASTMF-2159, PPSU, Lead free, non-corrosive, with a Dynamic "PTFE" solid ball stop and a "Viton/FKM-“O”- Ring inside for a "posi-seal-stop". Can withstand a high operating range of 200F and 200PSI, the "HIGHEST RATING IN IT'S CLASS". - ✅ EASY INSTALLATION; Arrows point liquid flow direction, ACTUAL SIZE 15/32"x 15/32” OD, Barb x Barb push-in quick connection for Hose, Pex, cpvc. Its durable alloy body allows for mechanical stainless steel clamps or crimping-rings brass/copper to secure a tight connection. - ✅ WARNING!!! "SIZE"- (OD)is smaller than 1/2"inch,look at "ACTUAL SIZE"!!..✅ WARRANTY; If it fails! Within 3yrs of purchase, WE WILL BUY IT BACK! See wrnty. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07C16XM4R | | Best Sellers Rank | #294,125 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #698 in Check Valves | | Brand Name | i Flow H2O | | Connector Type | Barb | | Customer Reviews | 4.1 4.1 out of 5 stars (148) | | Exterior Finish | Plastic | | Included Components | 1/2" PEX Check Valve | | Inlet Connection Size | 1/2"PEX Inches | | Inlet Connection Type | Barb | | Manufacturer | I Flow H2O | | Manufacturer Part Number | PCVB | | Material Type | Plastic | | Maximum Pressure | 80 Pound per Square Inch | | Model Number | 12chkvlv | | Number of Pieces | 1 | | Number of Ports | 2 | | Outlet Connection Size | 1/2"PEX Inches | | Outlet Connection Type | Barb x Barb | | Set Name | 1/2 inch PEX | | Size | 1/2" inch PEX | | Smart Home Compatibility | Not Smart Home Compatible | | Specification Met | NSF, UPC, IPC, cUPC | | Thread Size | 1/2" | | UPC | 704907956889 | | Unit Count | 1 Count | | Valve Type | Check Valve | ## Product Details - **Brand:** i Flow H2O - **Exterior Finish:** Plastic - **Inlet Connection Size:** 1/2"PEX Inches - **Inlet Connection Type:** Barb - **Material:** Plastic - **Maximum Operating Pressure:** 80 Pound per Square Inch - **Number of Ports:** 2 - **Outlet Connection Size:** 1/2"PEX Inches - **Outlet Connection Type:** Barb x Barb - **Specification Met:** NSF, UPC, IPC, cUPC ## Images ![Check valve 1/2"inch-PEX Plastic Barb X Barb, "PTFE" Ball Stop with "Viton O Ring" for Positive Fluid Stop. - Image 1](https://m.media-amazon.com/images/I/51CE7UtoU9L.jpg) ![Check valve 1/2"inch-PEX Plastic Barb X Barb, "PTFE" Ball Stop with "Viton O Ring" for Positive Fluid Stop. - Image 2](https://m.media-amazon.com/images/I/51JRFG1jHxL.jpg) ![Check valve 1/2"inch-PEX Plastic Barb X Barb, "PTFE" Ball Stop with "Viton O Ring" for Positive Fluid Stop. - Image 3](https://m.media-amazon.com/images/I/61kbdi-MHsL.jpg) ![Check valve 1/2"inch-PEX Plastic Barb X Barb, "PTFE" Ball Stop with "Viton O Ring" for Positive Fluid Stop. - Image 4](https://m.media-amazon.com/images/I/71rW8N5y2CL.jpg) ![Check valve 1/2"inch-PEX Plastic Barb X Barb, "PTFE" Ball Stop with "Viton O Ring" for Positive Fluid Stop. - Image 5](https://m.media-amazon.com/images/I/61VDDYXZlwL.jpg) --- ## 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.dk/products/63239442-check-valve-1-2inch-pex-plastic-barb-x-barb-ptfe](https://www.desertcart.dk/products/63239442-check-valve-1-2inch-pex-plastic-barb-x-barb-ptfe) --- *Product available on Desertcart Denmark* *Store origin: DK* *Last updated: 2026-07-05*