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Flow perception: The valve disc of the ARV automatically perceives the main flow of the processing system. Centrifugal pumps are hydrodynamic machines, in which a rotating impeller conti- nually transmits mechanical work.So the automatic recirculation valve sets out four functions in one body. 4: The efficiency curve of a typical centrifugal pump 50 60 70 80 40 30 20 10 0 0 10 20 30 40 50 60 70 Q m3/h h Efficiency, the -curveHydraulic principles of centrifugal pumps.

Check: The automatic recirculation valve also provides a check valve effect that prevents the liquid backflow to the pump body. Bypass multistage pressure reducing: The bypass control system of the Automatic recirculation valve reduces the backflow medium from the high-pressure pump outlet to appropriate backflow to the low-pressure storage device with low noise small wear. Recirculation control: Automatic recirculation valve automatically adjust pump H – Q characteristics to realize recycling.