Abstract
Charts are presented for use in the design of valve-closure programs to minimize water-hammer effects following power failure in centrifugal pump systems. The valve-closure program consists of two parts: rapid closure to a specified opening at the time of flow reversal, followed by linear motion to full closure during a period of five time intervals following flow reversal. A chart is presented for use in determining the maximum head at the pump that will accompany such a closure program. Other techniques of water-hammer control and their limitations are discussed.
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