This booster pump fills a need for those with 300 to 400 gallon per day RO systems needing pressure up to 80 psi. These light commercial RO and RODI systems are used widely by pet stores, breweries, and others where demands exceed typical residential-scale systems, but industrial-scale systems are not needed. Includes 3/8" quick connect fittings. Use with 3/8" tubing and accessories and the Aquatec 2 Amp Transformer. Never exceed 78 PSI output pressure. Best used with a liquid-filled pressure gauge.  For automated operation, we recommend use of a pressure switch and shut off solenoid (both available on this website) rather than a common four-ported hydraulic shut off valve.