--- product_id: 133369520 title: "One Way Check Valve 1/2\" Female Backflow Preventer, Check Valve for Repair NPT Female Thread Brass Float Reinforced - 0,5 inch Float Brass For Plumbing Water Boiler Heating System" brand: "metalandbrassco" price: "Rp234941" currency: IDR in_stock: true reviews_count: 8 category: "Metalandbrassco" url: https://www.desertcart.id/products/133369520-one-way-check-valve-1-2-female-backflow-preventer-check store_origin: ID region: Indonesia --- # Float mechanism for smooth one-way flow 1/2" NPT female thread Heavy-duty brass corrosion resistant One Way Check Valve 1/2" Female Backflow Preventer, Check Valve for Repair NPT Female Thread Brass Float Reinforced - 0,5 inch Float Brass For Plumbing Water Boiler Heating System **Brand:** metalandbrassco **Price:** Rp234941 **Availability:** ✅ In Stock ## Summary > 🚰 Keep your flow flawless and your system safe with brass-backed reliability! ## Quick Answers - **What is this?** One Way Check Valve 1/2" Female Backflow Preventer, Check Valve for Repair NPT Female Thread Brass Float Reinforced - 0,5 inch Float Brass For Plumbing Water Boiler Heating System by metalandbrassco - **How much does it cost?** Rp234941 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/133369520-one-way-check-valve-1-2-female-backflow-preventer-check) ## Best For - metalandbrassco enthusiasts ## Why This Product - Trusted metalandbrassco brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Silent Flow Tech:** Float-type design minimizes water hammer and pressure fluctuations for whisper-quiet operation. - • **Versatile Protection:** Ideal for water heaters, boilers, HVAC, and circulation systems to prevent costly backflow damage. - • **Precision Fit, No Fuss:** Standard 1/2" female NPT threading ensures seamless installation for pros and DIYers alike. - • **Upgrade Your System Instantly:** No special tools needed—quickly replace or repair your check valve and avoid downtime. - • **Built to Last, Built to Perform:** Crafted from reinforced brass, engineered to resist corrosion and handle high-pressure plumbing systems. ## Overview This 1/2" female NPT brass check valve features a reinforced float mechanism designed to prevent backflow in residential and commercial plumbing, heating, and boiler systems. Durable and corrosion-resistant, it ensures smooth, quiet one-way water flow, protecting your equipment from pressure fluctuations and contamination. Easy to install without special tools, it’s the smart upgrade for reliable, long-term plumbing performance. ## Description One Way Check Valve 1/2" Female Backflow Preventer, Check Valve for Repair NPT Female Thread Brass Float Reinforced - 0,5 inch Float Brass For Plumbing Water Boiler Heating System: desertcart.com: Industrial & Scientific Review: Very Well Made - Great little solid brass check valve. Not sure exactly what the cracking pressure is but I'm guessing around 10 because it's pretty tight. A little too tight for use on a RV pump but perfect for street pressure in a house. Review: 1/2 in brass check valve - good quality brass valve, expect good performance, ## Features - 1/2" NPT female thread brass check valve prevents backflow in water, boiler, and heating systems; ideal for residential or commercial plumbing setups requiring reliable one-way flow control. - Constructed from heavy-duty brass with reinforced float mechanism for durability, corrosion resistance, and long-term performance in hot and cold water applications and pressurized systems. - Float-type design provides smooth and quiet operation, reducing water hammer and pressure fluctuations; compatible with most standard plumbing, pump, or water heater installations. - Easy to install with standard 1/2 inch female NPT connections; no special tools required—perfect for DIYers and professionals looking to upgrade or repair system check valves quickly. - Suitable for water heaters, circulation systems, boilers, or HVAC setups; helps protect equipment by allowing one-way water flow and preventing contamination from back pressure. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07QLXDMNP | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #238,533 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #535 in Check Valves | | Brand | Metalandbrassco | | Customer Reviews | 4.0 4.0 out of 5 stars (68) | | Date First Available | April 11, 2019 | | Exterior Finish | Copper,Metal,Plastic,Stainless Steel | | Inlet Connection Size | 0.5 Inches | | Inlet Connection Type | threaded | | Item Weight | 3.52 ounces | | Item model number | 1234567 | | Manufacturer | Metalandbrassco | | Material | Brass | | Measurement System | inch | | Number of Ports | 2 | | Outlet Connection Size | 0.5 Inches | | Outlet Connection Type | FNPT | | Package Dimensions | 2.87 x 1.42 x 1.18 inches | | Part Number | 1234567 | | Size | 1/2 inch | | UPC | 719243833312 | ## Product Details - **Brand:** Metalandbrassco - **Exterior Finish:** Copper,Metal,Plastic,Stainless Steel - **Inlet Connection Size:** 0.5 Inches - **Inlet Connection Type:** threaded - **Manufacturer:** Metalandbrassco - **Material:** Brass - **Number of Ports:** 2 - **Outlet Connection Size:** 0.5 Inches - **Outlet Connection Type:** FNPT - **UPC:** 719243833312 ## Images ![One Way Check Valve 1/2" Female Backflow Preventer, Check Valve for Repair NPT Female Thread Brass Float Reinforced - 0,5 inch Float Brass For Plumbing Water Boiler Heating System - Image 1](https://m.media-amazon.com/images/I/51AhyZT3QuL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very Well Made *by V***N on July 10, 2021* Great little solid brass check valve. Not sure exactly what the cracking pressure is but I'm guessing around 10 because it's pretty tight. A little too tight for use on a RV pump but perfect for street pressure in a house. ### ⭐⭐⭐⭐ 1/2 in brass check valve *by E***O on March 3, 2025* good quality brass valve, expect good performance, ### ⭐⭐⭐⭐⭐ Worked perfectly *by J***R on April 27, 2023* Fit in tight space, working perfect. --- ## 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.id/products/133369520-one-way-check-valve-1-2-female-backflow-preventer-check](https://www.desertcart.id/products/133369520-one-way-check-valve-1-2-female-backflow-preventer-check) --- *Product available on Desertcart Indonesia* *Store origin: ID* *Last updated: 2026-05-11*