TW30-4021 DuPont FilmTec 900 GPD at 225 PSI 4 x 21 inch 99.5% Rejection Membranes

The DuPont FilmTec TW30-4021 is a commercial-grade tap water reverse osmosis (RO) membrane engineered explicitly for dependable, high-purity water production in light commercial systems. Utilizing advanced polyamide thin-film composite technology, this element features a tape-wrapped exterior, providing a highly economical and effective design specifically tailored for systems utilizing one or two elements per pressure vessel. This robust construction ensures the consistent removal of dissolved solids and impurities, making it an optimal choice for continuous-duty water treatment in food service, hospitality, and medical research facilities.

Designed to maximize operational efficiency, the TW30-4021 operates at a standard applied test pressure of 225 PSI. Under these conditions, this compact 4-inch by 21-inch element delivers a reliable nominal permeate flow rate of 900 gallons per day (GPD) alongside an outstanding stabilized salt rejection rate of 99.5%. Built to withstand rigorous daily use, it safely handles a maximum applied pressure of up to 600 PSI, a maximum feed flow rate of 14 GPM, and continuous liquid temperatures up to 113°F (45°C), providing an optimal balance of energy efficiency and high-performance tap water filtration.