Seagull IV basic water purification system consisting of 300 series stainless steel pressure vessel containing the RS-1SG Structure Matrix water purification cartridge that combines ultrafine micro-straining with broad spectrum molecular capture and electrostatic removal. Operates solely from your pressurized water system and requires no chemicals, post treatment storage tanks, waste-water lines or electricity. Flow Rate: 2.0 US g/min(3.8 ltrs/min) and 2000 US gallon (7600 Ltr) capacity. Operating Pressure: (min/max): 25/125 psi.