ooster pumps of the TH and FH series achieve very good hydraulic efficiency with their closed impellers . The types in the TH series enable high pressures with short immersion depths. The types FH are suitable for increasing the pressure at inlet pressures up to 26 bar in connection with backing pumps or central coolant systems. For special control tasks can drives are used, which must be matched in their design to the pump characteristics. See Technical Information Taxes / Regulations.