Automatic Recirculation Valve

The SchuF automatic recirculation valve has an individual design with a performance which has been perfected thanks to simulation and joint research and development with the universities of Magdeburg and Darmstadt. Minimum Flow or Automatic Recirculation Valves are able to automatically protect centrifugal pumps during low load operation. When the pump's load drops below a preset flow rate, the Automatic Recirculation Valve's disc moves towards it's seat and then causes the bypass bush to open a bypass flow path. The pump minimum flow rate is consequently reached and maintained. Automatic Recirculation Valve are frequently used in order to protect pumps which can handle hot water for boiler feeding or cooling water plants, where partial evaporation of the water content might otherwise cause the pump to run dry.