--- product_id: 587581806 title: "Max Water 4\" x 40\" BW-4040 2400 GPD Brackish Water RO Membrane Perfect for Car Wash, Whole House & Industrial Applications | Compatible with AG4040FF, RE4040-BE and More for Versatile Water Solutions" brand: "max water" price: "฿46358" currency: THB in_stock: true reviews_count: 5 category: "Max Water" url: https://www.desertcart.co.th/products/587581806-max-water-4-x-40-bw-4040-2400-gpd-brackish store_origin: TH region: Thailand --- # 99.5% salt rejection rate 2400 GPD high capacity 90 ft² premium membrane area Max Water 4" x 40" BW-4040 2400 GPD Brackish Water RO Membrane Perfect for Car Wash, Whole House & Industrial Applications | Compatible with AG4040FF, RE4040-BE and More for Versatile Water Solutions **Brand:** max water **Price:** ฿46358 **Availability:** ✅ In Stock ## Summary > 💧 Max Water: Pure Power, Pro Performance. ## Quick Answers - **What is this?** Max Water 4" x 40" BW-4040 2400 GPD Brackish Water RO Membrane Perfect for Car Wash, Whole House & Industrial Applications | Compatible with AG4040FF, RE4040-BE and More for Versatile Water Solutions by max water - **How much does it cost?** ฿46358 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/587581806-max-water-4-x-40-bw-4040-2400-gpd-brackish) ## Best For - max water enthusiasts ## Why This Product - Trusted max water brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Engineered for Peak Purity:** Achieve crystal-clear water with 99.5% salt and contaminant rejection—because your health deserves the best. - • **Robust & Lightweight Design:** Premium 90 ft² membrane area packed into an optimized 8-pound frame for durability without bulk. - • **Certified Quality & Longevity:** ISO 9001 certified with BPA-free materials, ensuring 2-3 years of reliable, toxin-free filtration. - • **Versatile High-Flow Performance:** Delivers up to 2400 gallons per day, perfect for commercial, industrial, and advanced home filtration setups. - • **Tailored for North American Water:** Expertly crafted by U.S. specialists to handle local water chemistry and pressure ranges flawlessly. ## Overview Max Water’s BW-4040 membrane is a premium, U.S.-engineered thin-film composite filter designed for superior water purification. With a 90 ft² active area and 99.5% salt rejection, it delivers up to 2400 gallons per day at optimal pressures, making it ideal for commercial and industrial use. Certified ISO 9001 and BPA-free, it ensures long-lasting, toxin-free filtration tailored for North American water conditions. ## Description 4040 Reverse Osmosis Membrane Review: works good - Using it in my whole house RO system. works like original Review: Works great and a lot cheaper than buying it from a professional window cleaning store - These are great to use for helping improve the purity of water. It essentially helps purify the water down to 90 or 95% purity which is fantastic and it lasts you forever. We’ve only bought it this year so we don’t know how long it last but if you take good care of it, it should last a good five maybe seven years. ## Features - Premium Commercial Membrane: Our 4040 membrane features an impressive 90 ft² of active membrane area and an optimized 8-pound final product weight, delivering superior durability and performance over inferior alternatives. Expertly engineered by U.S. specialists, this membrane is tailored for North American water quality, ensuring long-lasting and dependable filtration. - Optimal Purity & Performance: BW-4040 / TW30-4040 Delivering superior filtration, this RO membrane boasts a 99.5% rejection rate, effectively handling salt concentrations between 2000 and 8000 PPM, producing up to 2400 gallons per day, and operating efficiently at an optimum pressure of 600 psi (recommended 100 psi, with a range of 80-150 psi). - Choosing the Right Membrane: Effectively filter contaminants like heavy metals (fluoride, lead, chromium), and harmful minerals with a 0.0001 micron TFC membrane. Each membrane model is designed for specific water qualities, so understanding your water chemistry, pressure, and ppm is crucial for selection. Keep in mind that this membrane type is not suitable for whole-house filtration; a different setup is required for that purpose. Make sure to choose the appropriate model based on your unique water needs. - Versatile & High Capacity: Designed for diverse applications such as car washes, whole-house filtration, and industrial use, the BW-4040 membrane offers a reliable capacity of 2,400 GPD, ensuring optimal performance and compatibility with leading models like AG4040FF, RE4040-BE,W30 4040, TW30-4040, AG4040TM, AG4040TF, CPA2-4040 or CPA5-LD-4040 and others, making it a versatile solution for your water purification needs. - Advanced and Improved Membrane Technology: Our labs in the United States utilize innovative thin film composite (TFC) membrane technology, engineered to provide superior performance and durability for efficient water filtration and desalination. - ISO 9001 Certified Quality: Our ULP-4040 Membrane meets ISO 9001 standards, ensuring high-quality manufacturing processes and reliable performance for your water purification system. - Durable & Long-Lasting: Shipped dry in a sealed package to maintain peak condition, the BW-4040 Membrane is built for longevity, with a life expectancy of 24 to 36 months depending on water quality, temperature, and pressure. Constructed with BPA-free components, it ensures that no toxic plastic materials are used, making it safe for all water filtration needs.000 PPM, producing up to 2400 gallons per day, and operating efficiently at an optimum pressure of 600 psi (recommended 100 psi, with a range of 80-150 psi). - Trusted Expertise: With over 15 years in the water filtration industry, Max Water has delivered effective solutions and exceptional customer service to millions of families. Choose Max Water for reliable, high-quality filtration solutions. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07ZVYQKTQ | | Benefits | Removes impurities and contaminants for clean and safe drinking water | | Brand | Max Water | | Brand Name | Max Water | | Customer Reviews | 4.2 out of 5 stars 28 Reviews | | External Testing Certification | ISO 9001 | | External testing certification | ISO 9001 | | Item Dimensions D x W x H | 10.2D x 10.2W x 101.6H centimetres | | Item Weight | 3.63 kg | | Item weight | 3.63 kg | | Manufacturer | Max Water Canada | | Manufacturer Part Number | 104299 | | Material | Polyamide Thin-Film Composite | | Material Type | Polyamide Thin-Film Composite | | Model Number | BW-4040 / TW30-4040 2400 GPD | | Number of Items | 1 | | Product benefits | Removes impurities and contaminants for clean and safe drinking water | | Product dimensions | 10.2D x 10.2W x 101.6H centimetres | | Unit Count | 1.0 count | ## Product Details - **Material:** Polyamide Thin-Film Composite - **Product dimensions:** 10.2D x 10.2W x 101.6H centimetres - **Item weight:** 8 Pounds - **External testing certification:** ISO 9001 - **Product benefits:** Removes impurities and contaminants for clean and safe drinking water ## Images ![Max Water 4" x 40" BW-4040 2400 GPD Brackish Water RO Membrane Perfect for Car Wash, Whole House & Industrial Applications | Compatible with AG4040FF, RE4040-BE and More for Versatile Water Solutions - Image 1](https://m.media-amazon.com/images/I/41DwWhcZVPL.jpg) ![Max Water 4" x 40" BW-4040 2400 GPD Brackish Water RO Membrane Perfect for Car Wash, Whole House & Industrial Applications | Compatible with AG4040FF, RE4040-BE and More for Versatile Water Solutions - Image 2](https://m.media-amazon.com/images/I/71a48-BOHmL.jpg) ![Max Water 4" x 40" BW-4040 2400 GPD Brackish Water RO Membrane Perfect for Car Wash, Whole House & Industrial Applications | Compatible with AG4040FF, RE4040-BE and More for Versatile Water Solutions - Image 3](https://m.media-amazon.com/images/I/71UIR317ZOL.jpg) ![Max Water 4" x 40" BW-4040 2400 GPD Brackish Water RO Membrane Perfect for Car Wash, Whole House & Industrial Applications | Compatible with AG4040FF, RE4040-BE and More for Versatile Water Solutions - Image 4](https://m.media-amazon.com/images/I/71r1furkphL.jpg) ![Max Water 4" x 40" BW-4040 2400 GPD Brackish Water RO Membrane Perfect for Car Wash, Whole House & Industrial Applications | Compatible with AG4040FF, RE4040-BE and More for Versatile Water Solutions - Image 5](https://m.media-amazon.com/images/I/818RIIzW7pL.jpg) ## Questions & Answers **Q: Isn't there supposed to be 2 black o rings for the membrane?** A: As far as I know, the membrane doesn't come with o rings. If you buy the housing it does come with the o rings. **Q: Can a 2.5" x 40 membrane be used in this housing?** A: No only 4x40 **Q: Is this the housing only or the Membrane too?** A: It is the housing only. **Q: Cual es el máximo Tds de trabajo para esta membrana?** A: Concentration of Solution - maximim 2000 ppm ## Customer Reviews ### ⭐⭐⭐⭐⭐ works good *by A***C on 2 January 2025* Using it in my whole house RO system. works like original ### ⭐⭐⭐⭐⭐ Works great and a lot cheaper than buying it from a professional window cleaning store *by B***N on 14 December 2023* These are great to use for helping improve the purity of water. It essentially helps purify the water down to 90 or 95% purity which is fantastic and it lasts you forever. We’ve only bought it this year so we don’t know how long it last but if you take good care of it, it should last a good five maybe seven years. ### ⭐⭐⭐⭐⭐ Does the job *by J***N on 18 March 2023* I Use this item on my water conditioning machine. Lasts up to one year ## Frequently Bought Together - Max Water 4" x 40" BW-4040 2400 GPD Brackish Water RO Membrane Perfect for Car Wash, Whole House & Industrial Applications | Compatible with AG4040FF, RE4040-BE and more for Versatile Water Solutions - SimPure 5 Micron 10 x 4.5 Inch Whole House Carbon Water Filter | CTO Activated Coconut Carbon Replacement Cartridge | Fits DB10P, DB10C-2, GE GXWH40L, GXWH35F, BB10, FXHTC, FC15B (2Pack) --- ## 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.co.th/products/587581806-max-water-4-x-40-bw-4040-2400-gpd-brackish](https://www.desertcart.co.th/products/587581806-max-water-4-x-40-bw-4040-2400-gpd-brackish) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-06-09*