--- product_id: 389155834 title: "EZ-FLO 20401LF Brass In-Line Check Valve" brand: "eastman" price: "368 zΕ‚" currency: PLN in_stock: false reviews_count: 5 category: "Eastman" url: https://www.desertcart.pl/products/389155834-ez-flo-20401lf-brass-in-line-check-valve store_origin: PL region: Poland --- # Prevents backflow effectively 1/2 inch FIP threaded connection Heavy-duty brass build EZ-FLO 20401LF Brass In-Line Check Valve **Brand:** eastman **Price:** 368 zΕ‚ **Availability:** ❌ Out of Stock ## Summary > 🚰 Stop Backflow, Start Flowing: The Brass Valve That Means Business ## Quick Answers - **What is this?** EZ-FLO 20401LF Brass In-Line Check Valve by eastman - **How much does it cost?** 368 zΕ‚ with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/389155834-ez-flo-20401lf-brass-in-line-check-valve) ## Best For - eastman enthusiasts ## Why This Product - Trusted eastman brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Safe & Sound:** NSF and ANSI certified, fully compliant with the Safe Drinking Water Act for worry-free water safety. - β€’ **Built to Last:** Crafted from premium heavy-duty brass for unmatched durability and strength in every use. - β€’ **Plug & Play Fit:** Standard 1/2 inch female iron pipe (FIP) threading guarantees compatibility with most hoses and plumbing setups. - β€’ **Backflow Blocker:** Engineered with a stainless steel spring to ensure water flows only forwardβ€”no more unwanted backflow. - β€’ **Pressure Perfect:** Operates seamlessly between 5 PSI minimum to open and withstands up to 200 PSI maximum pressure. ## Overview The EZ-FLO 20401LF Brass In-Line Check Valve is a compact, maintenance-free plumbing essential designed to prevent water backflow. Constructed from heavy-duty brass with a stainless steel spring, it supports pressures up to 200 PSI and fits standard 1/2 inch FIP connections. Certified safe for drinking water, it’s the reliable choice for professionals and DIYers aiming for durable, compliant water flow control. ## Description This EZ-FLO In-Line Check Valve is constructed from heavy-duty brass for durability and strength. The valve features a stainless steel spring inside that is designed to prevent water from traveling back to the source. It is equipped with a 1/2 inch female iron pipe (FIP) connection. The in-line valve has a maximum pressure of 200 PSI with a minimum 5 PSI to open. The EZ-FLO in-line check valve is also compliant with the Safe Drinking Water Act. Maintenance free check valve for operation. Review: I use this check valve as part of my hot water recirculation system, and so far it has been working well. Review: These work very well but do NOT freeze them or they will leak. ## Features - EZ-FLO BRASS IN-LINE CHECK VALVE: The EZ-FLO brass in-line check valve is designed to prevent water from traveling back to the source - WHAT IS INCLUDED: This check valve is equipped with a 1/2 inch female iron pipe (FIP) threaded connection and is compatible with most standard hoses - DURABLE AND HIGH QUALITY: This in-line check valve is constructed from heavy-duty brass for extra durability and strength during every use - SPECS: This thread outlet features a working pressure of 200 PSI with a minimum of 5 PSI to open the spring - SAFETY: The EZ-FLO in-line check valve is compliant with the Safe Drinking Water Act ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00GZ3GZT6 | | ASIN | B00GZ3GZT6 | | Batteries Included? | No | | Batteries Required? | No | | Color | Brass | | Customer Reviews | 4.6 4.6 out of 5 stars (811) | | Customer reviews | 4.6 4.6 out of 5 stars (811) | | Date First Available | 21 September 2023 | | Date First Available | 21 September 2023 | | Included components | valve | | Item Package Quantity | 1 | | Item Weight | 120 g | | Item model number | 20401LF | | Item model number | 20401LF | | Manufacturer | EZ-FLO | | Manufacturer | EZ-FLO | | Material | Brass | | Maximum Pressure | 200 Pound per Square Inch | | Part number | 20401LF | | Product Dimensions | 4.57 x 3.18 x 3.18 cm; 120 g | | Product Dimensions | 4.57 x 3.18 x 3.18 cm; 120 g | | Size | 1/2 in. | | Specification met | NSF, ANSI | | Style | Brass In-Line Check Valve | ## Product Details - **Brand:** Eastman - **Exterior finish:** Brass, Stainless Steel - **Inlet connection size:** 0.5 Inches - **Item dimensions L x W x H:** 46 x 32 x 32 millimeters - **Material:** Brass ## Images ![EZ-FLO 20401LF Brass In-Line Check Valve - Image 1](https://m.media-amazon.com/images/I/61LLZPEBMNL.jpg) ![EZ-FLO 20401LF Brass In-Line Check Valve - Image 2](https://m.media-amazon.com/images/I/71xF4cnzvML.jpg) ![EZ-FLO 20401LF Brass In-Line Check Valve - Image 3](https://m.media-amazon.com/images/I/61tCG2CGE5L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Es para uso horizontal o vertical?** A: In-line check valves can be installed horizontally or vertically. **Q: What is the threading if i wanted to attach brass connectors to either side?** A: Thank you for your question on the Brass In-Line. The threading is 1/2" FIP. **Q: Will this work with oil?** A: Can't say for sure, but I would say it depends on things like whether the oil is clean and how hot the oil is. I would think that it would work with clean, ambient temperature oil, but that does not take into account what the seals are made of and what kind of oil you're talking about. Some oils will degrade the seals. Not much help, but something to think about. **Q: Max water temp and is the spring inside stainless steel?** A: In the industrial world, low temp is 180f or less, High temp is 181- Steam, so when someone says low temp, you can use this idem. I personally have used them on my boiler returns without a problem, just make sure you at 5ft of head for your circulator pump, ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by R***N on 18 September 2025* I use this check valve as part of my hot water recirculation system, and so far it has been working well. ### ⭐⭐⭐⭐⭐ Review *by J***T on 7 November 2025* These work very well but do NOT freeze them or they will leak. ### ⭐⭐⭐⭐⭐ Review *by A***O on 23 June 2025* Nosotros lo usamos regularmente y nos da buen resultado, tenemos mucho tiempo utilizando ## Frequently Bought Together - EZ-FLO Brass In-Line Check Valve, 1/2 Inch IPS, Stainless Steel Spring, 20401LF - 2 Gallon Accumulator Expansion Tank With Wall Mount Bracket 1/2" Female NPT --- ## 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.pl/products/389155834-ez-flo-20401lf-brass-in-line-check-valve](https://www.desertcart.pl/products/389155834-ez-flo-20401lf-brass-in-line-check-valve) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-26*