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Pumpdesigner, We have in the past used the services of AEMS in England. One of our customer municipalities recently employed their services to confirm that a 150 Hp pump (two actually, they bought a spare at the same time) they had bought was in fact too large for their application. They had...

The Question is: Has anyone conducted or know of a study on the recommended frequency of performance tests, especially for large water pumping systems, as a means of predicting maintenance requirements? -------------------------------------------------------- My group is responsible for...

I am going to purchase a portable (battery-powered, fits in the trunk type) flow meter/datalogger for recording flows at pumping stations, reservoirs, and watermains accessed via underground chambers. Typical diameters are 600-1800mm (24"-72") at v's up to 2.5 m/s, with reverse flows...

ISO Standard #5198 makes reference to the thermodynamic method of Pump Efficiency measurement in its section 11. The methods are painstaking, but the science is clearly laid out. They refer to measurement or estimation of the "other" mechanical losses in the pump including heat...