Abstract
Abstract In testing large centrifugal pumps it is difficult to determine the amount of water that is being handled. In many cases the quantity is so great it is almost impossible to determine it by the ordinary field weighing system. The use of standard test nozzles offers a simple means of determining the capacity of large pumps, but the nozzles must be accurately calibrated. The authors made a test of three pumps by laying about 1000 ft. of pipe behind a dredge and attached standard nozzles to the end of the pipe line for calibration purposes. The quantity of water flowing was determined by the salt-solution method.
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