R.O. UltraTec’s newest line of HF5 commercial membrane elements are the industry’s highest flowing membranes. The HF5 4-in. x 40-in. ultra low pressure membrane elements are rated for 4,000 gpd at 150 psi, 3,000 gpd at 100 psi and 2,500 gpd at 80 psi, while maintaining a nominal rejection rate of 98.5%. HF5-4040 membrane elements are manufactured with an industry-leading Film Technology membrane flat sheet and is spiral wound to fit all standard size commercial membrane housings. This new tape-wrapped element will offer energy savings and counters the negative effects of cold feed water temperatures. R.O. UltraTec’s membranes are integrity tested and shipped “dry” for longer shelf life.