Aquafine RBE-24R/60 ultraviolet disinfection unit with a flow rate of 520 gallons per minute for fresh water or 630 gallons per minute for RO/DI water. This unit takes 24 lamps and requires 120 volts, drawing 14.5 amps. Fittings are 4 inch raised face flange connections. Features include remote electrical cabinets, relative irradiance meters, lamp operational display lights, high temperature shutdown and hour meters. These units have used sleeves.