Centrifugal Pump Minute

How to Measure Total Dynamic Head

How to Measure Total Dynamic HeadOctober 12, 2018

In this Centrifugal Pump Minute, James Farley, Griswold Product Manager, discusses total dynamic head, and its importance when assessing a pumps performance in the field. Using the Griswold test lab, James shows the difference in measuring discharge pressure versus measuring differential pressure.

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How to Measure Total Dynamic Head

Operating at Best Efficiency Point

Operating at Best Efficiency PointSeptember 12, 2018

In this Centrifugal Pump Minute, James Farley, Griswold Product Manager, discusses best efficiency point and a good target for efficient pump operation. Using the Griswold test lab, James shows what factors affect pump efficiency, and how to optimize the performance of your pump.

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Operating at Best Efficiency Point

Affinity Law RPM

Affinity Law RPMAugust 9, 2018

In this Centrifugal Pump Minute, James Farley, Griswold Product Manager, discusses the Affinity Law formula that can be used to predict pump performance when changing speeds. Using the Griswold test lab, James provides a real-world example of the accuracy of the Affinity Law.

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Affinity Law RPM

Affinity Law Impeller Trim

Affinity Law Impeller Trim

In the first part of this two-part Centrifugal Pump Minute, James Farley, Griswold Product Manager, discusses the pump Affinity Law and how to apply it. James then uses the Affinity Law to estimate a pumps performance when the impeller diameter is changed.

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Affinity Law Impeller Trim

Determining available system NPSHA

Determining available system NPSHAJuly 2, 2018

In this Centrifugal Pump Minute, James Farley, Griswold Product Manager, reviews how to determine available system NPSHA for a pump that is installed and operational. Using the calculation needed to determine NPSHA, James presents example tests that will establish system performance and possible pump cavitation.

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Determining available system NPSHA

Welcome to the Griswold Centrifugal Pump Minute Blog

Welcome to the Griswold Centrifugal Pump Minute BlogJuly 1, 2018

At Griswold, we’re known as the global experts in centrifugal pump technology. Personally, we enjoy being known as the industry thought leaders, and believe this reputation sums up our evolution and efforts over the past few decades. However, we also recognize that in order to build on a company legacy that dates back over...

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Welcome to the Griswold Centrifugal Pump Minute Blog

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