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I hope that my last column (Pumps & Systems, September 2014) provided a clearer definition of power factor and how it can be calculated.

Who determines where pressure gauges are located in a pump system? How close to the pump should they be, and what happens if these rules are not followed?

A reciprocating power pump, as depicted in Figure 1, is a displacement machine. It has characteristics that are different than a centrifugal pump.

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