ESPA1-4040 Hydranautics Nitto 2,600 GPD at 150 PSI 4 x 40 inch 99.3% Rejection Membranes

Hydranautics ESPA1-4040 Extra Low Energy Brackish Water RO Membrane (2,600 GPD)

The Hydranautics ESPA1-4040 (manufactured by a Nitto Group Company) is a commercial-grade, Energy Saving Polyamide (ESPA) reverse osmosis membrane engineered to yield maximum productivity and high salt rejection for water treatment systems. Utilizing advanced composite polyamide polymer technology, this 4-inch by 40-inch spiral-wound element is specifically designed for the purification of low TDS (Total Dissolved Solids) tap and brackish water sources. By maximizing membrane permeability without sacrificing structural integrity, it produces uncompromising water purity for critical applications ranging from municipal drinking water production to light industrial process water operations.

Designed for peak efficiency in commercial reverse osmosis systems, the ESPA1-4040 generates a high permeate flow rate of 2,600 GPD (9.8 m³/d) while operating at an exceptionally low test pressure of just 150 PSI. This translates to a substantial reduction in the energy required to pressurize feed water, lowering overall operational expenditure (OPEX) by minimizing the wear and strain on high-pressure system pumps. Featuring 85 square feet of active membrane area, this element offers a nominal salt rejection rate of 99.3%, providing a consistently reliable, high-performance solution for facilities demanding both superior water quality and strict energy management. It provides the ultra-pure water output necessary for spot-free rinses at commercial car washes, prevents mineral scaling in water vending and refilling machines, and guarantees a streakless finish for window washing and solar panel cleaning. Additionally, its robust permeate production makes it an ideal core component for precise nutrient dosing in hydroponics and agriculture, as well as maintaining strict flavor profiles in bottling plants and breweries.