Feed Control by Centrifugal Pump

If a centrifugal pump with high discharge capacity is being used to feed a process unit with manual operation control, then provide a recirculation line (to the feed tank on inlet side of the pump) with an orifice plate and a throttle valve. 

The quantity to be fed to the process unit can be controlled by the recirculation of the liquid into the feeding tank. The throttle valve can be operated by automatic control with a manual override. 

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