The OS-5500-020-B is our standard PTO-driven One Seven system for installation in municipal frontline fire appliances. The maximum One Seven foam volume is 5,500 l/min, the flow capacity for water/ wetting agent is up to 2,000 l/min. The system´s working pressure is 8 bar. The system is fitted with two (2) 2.0´´ One Seven compact foam generators which allow the simultaneous operation of one wet foam and one dry foam outlet, e.g. in case of exposure protection combined with firefighting operation. The OS-5500-020-B can supply two (2) 3.0`` discharge outlets with a foam flow of up to 2,800 l/min (400 l water, 2,400 l air) each. The system allows the simultaneous operation of up to six (6) One Seven hand lines, respectively a monitor with a foam flow rate of up to 5,500 l/min. In combination with the unique One Seven foaming agents the OS-5500-020-B is a reliable and effective weapon against all kinds of fire.