Ecosoft HF-4040 4" x 40" High Flow, Extra Low Energy Reverse Osmosis Membrane

Ecosoft HF-4040 4" x 40" High Flow, Extra Low Energy Reverse Osmosis Membrane The Ecosoft HF-4040 High Flow Reverse Osmosis Membrane is a high-performance 4" x 40" commercial RO membrane element designed to deliver excellent permeate production and high salt rejection while operating at very low pressure. Its extra-low-energy design makes it particularly suitable for commercial and light industrial reverse osmosis systems where reduced operating pressure and efficient water production are important. Manufactured using polyamide thin-film composite (TFC) membrane technology, the HF-4040 provides a nominal permeate flow of 10.2 m³/day (approximately 425 litres per hour) under standard test conditions, with 98% stabilised salt rejection and a minimum salt rejection of 97.5%. Ecosoft recommends the HF-4040 for feed water with a TDS of up to 1,500 mg/L, making it an excellent choice for the treatment of mains and other relatively low-salinity water supplies. Extra Low Pressure, High Flow Performance One of the key advantages of the Ecosoft HF-4040 membrane is its ability to achieve high permeate production at substantially lower operating pressures than conventional commercial RO membranes. The manufacturer's rated performance of 10.2 m³/day is achieved at a test pressure of just 6.9 bar, with 500 mg/L NaCl feed water at 25°C. This low-pressure performance can help reduce the energy required by the RO system's high-pressure pump while maintaining excellent treated-water production, making the HF-4040 particularly attractive for energy-efficient commercial reverse osmosis installations. Key Features 4" x 40" commercial RO membrane element High-flow, extra-low-pressure design Nominal permeate production: 10.2 m³/day (10,200 L/day) Approximate nominal production: 425 LPH 98% stabilised salt rejection Minimum salt rejection: 97.5% Recommended for feed water with TDS up to 1,500 mg/L Polyamide Thin-Film Composite (TFC) membrane 7.9 m² active membrane area 34 mil feed spacer Designed for efficient operation at low feed pressures Suitable for a wide range of commercial water purification applications Typical Applications The Ecosoft HF-4040 can be used across a broad range of commercial and industrial water treatment applications, including: Commercial drinking water production Private homes and larger residential RO systems Food and beverage production Breweries Livestock and poultry farms Aquaculture Greenhouses and horticulture Mist and humidification systems Commercial laundries General food-industry water purification These applications are specifically identified by Ecosoft for the HF membrane range. Technical Specifications Specification Ecosoft HF-4040 Membrane Size 4" x 40" Membrane Type Polyamide Thin-Film Composite Active Area 7.9 m² Nominal Permeate Flow 10.2 m³/day Approx. Nominal Flow 425 LPH Stabilised Salt Rejection 98% Minimum Salt Rejection 97.5% Feed Spacer 34 mil Maximum Operating Temperature 45°C Maximum Operating Pressure 41 bar Maximum Pressure Drop 1.0 bar per element Continuous Operating pH 3–10 Short-Term Cleaning pH 2–12 Maximum Feed Water SDI SDI 5 Free Chlorine Tolerance <0.1 mg/L Length 1016 mm Diameter 99 mm The dimensions and operating limits above are taken from the Ecosoft HF-4040 technical data sheet. Performance test conditions: 500 mg/L NaCl feed water, 25°C, 15% permeate recovery and 6.9 bar applied pressure. Individual membrane permeate flow can vary by ±15% from the stated nominal value. Designed for Ecosoft Commercial RO Systems The HF-4040 is used within Ecosoft commercial reverse osmosis systems including the MO6500, MO12000, MO24000 and MO36000 ranges. Actual membrane output will depend on feed-water temperature, salinity, operating pressure and overall system configuration. The manufacturer's performance charts demonstrate how permeate production reduces as feed-water TDS increases and/or water temperature falls. Important Pre-Treatment Requirements Correct pre-treatment is essential for maintaining membrane performance and service life. Feed water should have a maximum SDI of 5, and residual chlorine should be removed before the water reaches the membrane. Although the stated free-chlorine tolerance is <0.1 mg/L, Ecosoft warns that chlorine and other oxidising agents can cause premature membrane failure and recommends removing residual chlorine during pre-treatment. For chlorinated mains water, suitable carbon pre-filtration should therefore be incorporated into the RO system design. Why Choose the Ecosoft HF-4040? The Ecosoft HF-4040 4" x 40" RO membrane combines high permeate production, excellent salt rejection and exceptionally low-pressure operation. With a nominal capacity of 10,200 litres per day, it provides an efficient membrane solution for commercial RO systems where reducing energy consumption without sacrificing water production is a priority. Its standard 4" x 40" format also makes it suitable for integration into appropriately designed commercial membrane housings, subject to confirming system operating conditions and compatibility. Please note: Actual permeate production and treated-water quality will vary according to feed-water TDS, temperature, pressure, recovery and water chemistry.