--- product_id: 54539935 title: "ULP21 4040 Commercial 2400gpd Reverse Osmosis RO Membrane Low Pressure" brand: "vontron" price: "VT152565" currency: VUV in_stock: true category: "Vontron" url: https://www.desertcart.vu/products/54539935-ulp21-4040-commercial-2400gpd-reverse-osmosis-ro-membrane-low-pressure store_origin: VU region: Vanuatu --- # Ultra low operating pressure 2400 GPD ultra-pure output 98% contaminant rejection ULP21 4040 Commercial 2400gpd Reverse Osmosis RO Membrane Low Pressure **Brand:** vontron **Price:** VT152565 **Availability:** ✅ In Stock ## Summary > 💧 Pure Power, Less Pressure – Stay Ahead with Vontron ULP21-4040! ## Quick Answers - **What is this?** ULP21 4040 Commercial 2400gpd Reverse Osmosis RO Membrane Low Pressure by vontron - **How much does it cost?** VT152565 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/54539935-ulp21-4040-commercial-2400gpd-reverse-osmosis-ro-membrane-low-pressure) ## Best For - vontron enthusiasts ## Why This Product - Trusted vontron brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Commercial Use:** Perfectly engineered for demanding applications like window cleaning and aquatics, elevating your business standards. - • **Elite Contaminant Defense:** Achieves a high 98% rejection rate, ensuring crystal-clear water for professional-grade results. - • **Energy-Smart Low Pressure:** Runs at just two-thirds the pressure of standard membranes, cutting energy costs without sacrificing performance. - • **Maximize Pure Water Output:** Delivers an impressive 2400 gallons per day to keep your operations flowing seamlessly. - • **Durable Thin Film Composite:** Crafted with advanced TFC material for long-lasting reliability and consistent water purity. ## Overview The Vontron ULP21-4040 is a commercial-grade reverse osmosis membrane designed for ultra-low pressure operation, producing up to 2400 gallons of high-purity water daily with a 98% contaminant rejection rate. Its advanced Thin Film Composite construction ensures durability and efficiency, making it ideal for professional applications such as window cleaning and aquatics. ## Description The Vontron ULP21-4040 40inch Commercial Reverse Osmosis RO Membrane is ideal for production of pure water for many applications. Working under the conditions of ultra low operating pressure, ULP membrane series can achieve as high permeated flow and rejection rate as regular low-pressure membranes can, it rus under approximately two thirds pressure of that regular low pressure compound membranes, and can achieve a rejection rate of as high as 98%. This membrane is capable of producing 2400 gallons of product water per day, and is ideal for Window Cleaning applications, along with Aquatics. Please see detailed manufacturers specification below: Technical parameter for Vontron 4040 RO membrane ULP21-4040 Performance Stable property desalinization rate % 99 Lowest desalinization rate % 98.5 Volume GPD (m--3/d) 2400(9.1) Effective membrane area ft2(m2) 85(7.9) Test condition Test pressure 150pai(1.03Mpa) Test fluid temperature 25°C Test fluid density (NaCl) 1500ppm Test fluid pH 7.5 Single RO membrane element recovery rate 15% Extreme operating conditions The maximum operating pressure 600psi(2.07Mpa) The maximum water supply temperature 45°C The maximum water supply SDI 5 free chlorine concentration in water supply 0.1ppm Water supply pH scope when continuous running 3~10 Water supply pH scope when chemical cleaning 2~12 The maximum pressure drop of single RO membrane element 15psi(0.1Mpa) ## Features - The Vontron ULP21-4040 40inch Commercial Reverse Osmosis RO Membrane is ideal for production of pure water for many applications. - Working under the conditions of ultra low operating pressure, ULP membrane series can achieve as high permeated flow and rejection rate as regular low-pressure membranes can, it rus under approximately two thirds pressure of that regular low pressure compound membranes, and can achieve a rejection rate of as high as 98%. - This membrane is capable of producing 2400 gallons of product water per day, and is ideal for Window Cleaning applications, along with Aquatics. - Please see detailed manufacturers specification below ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00I1GCX1O | | Benefits | Effectively filters and purifies water | | Best Sellers Rank | 695,002 in DIY & Tools ( See Top 100 in DIY & Tools ) 613 in Replacement Under-Sink Water Filters | | Brand Name | Vontron | | External Testing Certification | NSF | | Manufacturer | Vontron | | Manufacturer Part Number | ULP21-4040 | | Material Type | Thin Film Composite (TFC) | | Model Number | ULP21-4040 | | Number of Items | 1 | | Unit Count | 1.0 count | ## Product Details - **Brand:** Vontron - **External testing certification:** NSF - **Material:** Thin Film Composite (TFC) - **Product benefits:** Effectively filters and purifies water - **Unit count:** 1.0 count ## Images ![ULP21 4040 Commercial 2400gpd Reverse Osmosis RO Membrane Low Pressure - Image 1](https://m.media-amazon.com/images/I/217oRLvaOKL.jpg) ## Frequently Bought Together - Vontron ULP21 4040 Commercial 2400gpd Reverse Osmosis RO Membrane Low Pressure - HM Digital DM-1 in-Line Dual TDS Monitor, 0-9990 ppm Range, +/- 2% Readout Accuracy --- ## 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.vu/products/54539935-ulp21-4040-commercial-2400gpd-reverse-osmosis-ro-membrane-low-pressure](https://www.desertcart.vu/products/54539935-ulp21-4040-commercial-2400gpd-reverse-osmosis-ro-membrane-low-pressure) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-18*