--- product_id: 94785668 title: "Max Water ULP-4040 Reverse Osmosis 4\" x 40\" RO Membrane, 2600 GPD For Water Purification Desalination Commercial, Industrial, Agricultural" brand: "max water" price: "โ‚ฌ 317.19" currency: EUR in_stock: true category: "Max Water" url: https://www.desertcart.be/products/94785668-max-water-ulp-4040-reverse-osmosis-4-x-40-ro store_origin: BE region: Belgium --- # 2600 GPD capacity 600 psi max pressure 99.35% impurity rejection Max Water ULP-4040 Reverse Osmosis 4" x 40" RO Membrane, 2600 GPD For Water Purification Desalination Commercial, Industrial, Agricultural **Brand:** max water **Price:** โ‚ฌ 317.19 **Availability:** โœ… In Stock ## Summary > ๐Ÿ’ง Elevate your water game with pro-grade purity and power! ## Quick Answers - **What is this?** Max Water ULP-4040 Reverse Osmosis 4" x 40" RO Membrane, 2600 GPD For Water Purification Desalination Commercial, Industrial, Agricultural by max water - **How much does it cost?** โ‚ฌ 317.19 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/94785668-max-water-ulp-4040-reverse-osmosis-4-x-40-ro) ## 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 - โ€ข **Versatile Integration:** Seamlessly fits commercial, agricultural, and industrial systems, compatible with top industry models. - โ€ข **Unmatched Purity & Flow:** Delivers up to 2600 gallons/day with 99.35% contaminant rejection for crystal-clear water. - โ€ข **Precision Filtration Tech:** 0.0001 micron TFC membrane filters heavy metals, organics, and salts with surgical accuracy. - โ€ข **Industrial-Grade Durability:** Built with BPA-free fiberglass and ISO 9001 certified for reliable, long-lasting performance. - โ€ข **Expert Support & Hassle-Free Exchange:** 25+ years of expertise with dedicated post-sale support and easy membrane swaps. ## Overview The Max Water ULP-4040 is a high-capacity 4" x 40" reverse osmosis membrane engineered for commercial, industrial, and agricultural water purification. It delivers up to 2600 gallons per day with a 99.35% impurity rejection rate, operating optimally at 100 psi and tolerating up to 600 psi max pressure. Constructed from BPA-free fiberglass and certified to ISO 9001 standards, it ensures durable, safe, and efficient filtration of heavy metals, salts, and organic contaminants. Designed for seamless integration with leading RO systems, it comes backed by 25+ years of expert support and a hassle-free exchange policy. ## Description Buy Max Water ULP-4040 Reverse Osmosis 4" x 40" RO Membrane, 2600 GPD For Water Purification Desalination Commercial, Industrial, Agricultural: Replacement Under-Sink Water Filters - desertcart.com โœ“ FREE DELIVERY possible on eligible purchases ## Features - Optimal Purity & Performance: Achieve exceptional water quality with our ULP-4040 4" x 40" RO Membrane capable of producing UP TO 2600 Gallons Per Day, featuring a 99.35% impurity rejection rate, 600 psi Optimum Pressure: 100 psi (80-150) Salt Removal Rate: 99.20% PH levels and salt concentration < 2000 (pH 3-10) Maximum free chlorine tolerance: <0.1 ppm. - Choosing the Right Membrane: Effectively filter contaminants like heavy metals (fluoride, lead, chromium), organic materials, 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: The ULP-4040 4 x 40 inch RO Membrane is designed for whole-house, agricultural, and industrial applications. This membrane delivers a robust capacity of 2,600 GPD and allows for seamless integration with industry-leading models, including Dow Filmtec AG4040FF, TW30-4040, and GE XLE-4040. - 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 ULP-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. - 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. - Trusted Expertise: With 25+ years of experience, we help you choose the perfect membrane for your water needs. Each membrane has a unique purpose and our expert guidance ensures you make the right choice. If you pick the wrong one, our hassle-free exchange policy will get you the correct membrane quickly. We also offer excellent post-sale support for installation, maintenance & troubleshooting. Let us make the process simpler-contact us today for an absolutely hassle-free, no-loss purchase for both parties. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07GZTZVFR | | Best Sellers Rank | #51,227 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #363 in Replacement Under-Sink Water Filters | | Brand Name | Max Water | | Customer Reviews | 4.1 4.1 out of 5 stars (42) | | External Testing Certification | ISO 9001 | | Included Components | commercial Membrane | | Item Dimensions D x W x H | 3.94"D x 3.94"W x 39.76"H | | Item Weight | 8 Pounds | | Manufacturer | Max Water | | Manufacturer Part Number | 104293 | | Material Type | Fiberglass | | Model Number | Commercial Membrane | | Number of Items | 1 | | Product Benefits | Removes impurities for improved water quality | | UPC | 680392199928 | | Unit Count | 1.0 Count | ## Product Details - **External Testing Certification:** ISO 9001 - **Item Weight:** 8 Pounds - **Material:** Fiberglass - **Product Benefits:** Removes impurities for improved water quality - **Product Dimensions:** 3.94"D x 3.94"W x 39.76"H ## Images ![Max Water ULP-4040 Reverse Osmosis 4" x 40" RO Membrane, 2600 GPD For Water Purification Desalination Commercial, Industrial, Agricultural - Image 1](https://m.media-amazon.com/images/I/51+xFoyYEfL.jpg) ## Available Options This product comes in different **Style** options. ## 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 mรกximo Tds de trabajo para esta membrana?** A: Concentration of Solution - maximim 2000 ppm ## Frequently Bought Together - Max Water ULP-4040 Reverse Osmosis 4" x 40" RO Membrane, 2600 GPD | ULP 4040 For Water Purification Desalination Commercial, Industrial, Agricultural | Compatible with Dow Filmtec AG4040FF, TW30-4040 - lesolar 4040 Ro Membrane RO Membrane Housing 4 Inch Commercial Reverse Osmosis Membrane Housing 304 Stainless Steel Pressure Vessel 4"x40" 300 PSI 3/4" Feed and Drain Ports 1/4" Permeate Ports - SimPure Whole House Water Filter Housing (DB10P), 10" x 4.5" Sediment Carbon Filter Universal Housing, Pre-Filtration System for Well and City Water, 1" NPT Port, Pressure Release --- ## Why Shop on Desertcart? - ๐Ÿ›’ **Trusted by 1.3+ Million Shoppers** โ€” Serving international shoppers since 2016 - ๐ŸŒ **Shop Globally** โ€” Access 737+ million products across 21 categories - ๐Ÿ’ฐ **No Hidden Fees** โ€” All customs, duties, and taxes included in the price - ๐Ÿ”„ **15-Day Free Returns** โ€” Hassle-free returns (30 days for PRO members) - ๐Ÿ”’ **Secure Payments** โ€” Trusted payment options with buyer protection - โญ **TrustPilot Rated 4.5/5** โ€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/94785668-max-water-ulp-4040-reverse-osmosis-4-x-40-ro](https://www.desertcart.be/products/94785668-max-water-ulp-4040-reverse-osmosis-4-x-40-ro) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-20*