Automatic Recirculation Valve

The SchuF automatic recirculation valve is a unique design whose performance has been perfected through simulation and joint research and development with the universities of Magdeburg and Darmstadt. Operation of Minimum Flow (or ARC) ValvesPump and Automatic Recirculation Valves automatically protect centrifugal pumps during low load operation. As the pump's load drops below a preset flow rate, the valve's disc moves towards it's seat and causes the bypass bush to open a bypass flow path. The pump minimum flow rate is thus reached and maintained.Automatic Recirculation Valve ApplicationsA common application is for pumps which handle hot water for boiler feeding or cooling water plants, where partial evapouration of the water content might otherwise cause the pump to run dry. Even when the flow rate through the main valve to the boiler is completely shut off, a minimum flow is maintained.