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In Part 2 of our How to Build a Centrifugal Pump Curve series, we added five head/capacity curves to the e-1510 4BD pump curve we are building. These curves reflect the tested performance of pumps with various-size impellers. Now, it's time to focus on the pump’s power requirement and how it....
Read MoreIn Part 1 of our Building a Pump Curve series, we discussed the parts of an unplotted pump curve. Now it's time to add some curves! In Figure 1, we've added a single head/capacity curve for a 9.5-inch diameter impeller--the largest impeller that can be used with our example pump, a Bell & Gossett e-1510 4BD. During laboratory tests...
Read MoreUnderstanding centrifugal pump curves is essential for designers and installers of hydronic HVAC and plumbing systems. These handy charts provide a wealth of information about a pump's performance capability and help us...
Read MoreThere 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....
Read MoreHydronic pumps all do the same basic thing—they circulate water. So why are there so many different types and configurations? And what criteria determines the best pump for a given application? That’s what we will be exploring in this series on "How to...
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