K56 Series Water Booster System Flojet's K56 Series Water Booster Systems are designed for supplying consistent water pressure to beverage dispensers, coffee machines, water filtration systems, carbonators & ice machines. Supplies up to 4 gpm (15 lpm). For use when water requirement is over 1.7 gpm (6.4 lpm). Model No.: K56 Series Half-gallon (1.9L) accumulator tank maintains constant flow requirements Capable of CO2 inlet pressures of up to 90 psi (6.2 bar) Ultimate performance and reliability, with extended service life Quiet operation with exhaust muffler Easy installation with all quick disconnect ports