4021 PurClean Spot Free Rinse Car Wash Replacement Membrane 1000 GPD at 100 PSI 4 x 21 inch 99% Rejection Extra Low Energy

HCTI 4" x 21" Extra Low Pressure RO Membrane (PurClean Compatible, 1,000 GPD)

Engineered as a premium, direct-fit replacement for compact PurClean spot-free rinse systems, this 4-inch by 21-inch extra low pressure (XLP) reverse osmosis membrane delivers exceptional water purity for professional car wash applications. Proudly manufactured in the United States by Hydrocomponents & Technologies Inc. (HCTI), this industrial-grade element is designed to seamlessly integrate into standard 4021 pressure vessels. It is fully compatible with space-saving PurClean configurations that specifically utilize 4021-sized elements, such as the PurClean PC1000 and similar wall-mounted spot-free production units.

Utilizing advanced thin-film composite technology, this element operates effectively at a significantly reduced feed pressure of just 100 PSI. This minimizes energy consumption and reduces wear on high-pressure booster pumps, making it a highly cost-effective solution for high-volume car wash operators. Important Installation Note: Because this HCTI membrane is explicitly designed as an extra low pressure (XLP) element, your PurClean system's operating pressure may need to be adjusted down during installation to safely utilize this membrane and prevent over-pressurization while maintaining peak system throughput.

This American-made membrane is built for consistency and durability, delivering a dependable nominal permeate flow rate of 1,000 gallons per day (GPD). With a stabilized salt rejection rate of 99.00%, it ensures the robust removal of total dissolved solids (TDS) and hard water minerals strictly required for a pristine, spot-free vehicle finish. Engineered to handle continuous, rigorous wash cycles, this compatible alternative provides reliable output even under variable feed water conditions, offering a dependable balance of high flux and stringent, energy-efficient purification.