The purpose of the wearing rings used in a centrifugal pump is to _____.A.prevent an inter

The purpose of the wearing rings used in a centrifugal pump is to _____.

A.prevent an internal explosion in the pump when it is overheated

B.enable a visual inspection of the pump while it is running

C.insure a proper alignment of the pump coupling to the driver

D.accommodate for friction between the impeller and the easing

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