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There are times when slightly more capacity or a little more safety factor is warranted in a pump selection. Often we are asked about increasing the speed of the motor above the nameplate rated RPM. There are several things to examine....
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In variable speed pumping systems, does zero load ever result zero pump speed?
Practically speaking, the answer is no. In closed hydronic systems with 2-way valves there is almost always some amount of differential pressure created by continuous impeller rotation – even when....
Read MoreWhat are the pump affinity laws and why are they so important?
Pump affinity laws define the mathematical relationship that exists between pump speed, flow, total head, and power consumption.
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