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Columns

Lev Nelik: Ask Dr. Pump
Pumps
Overfiling & Underfiling of Impeller Blades to Improve What?
Pumps Wanted: Reliable, Efficient, Low Cost—Pick Two
Pumps
Pumps Wanted: Reliable, Efficient, Low Cost—Pick Two
jim elsey
Pumps
Impeller Design Lament
Considerations for pump and impeller design.
Lev
Pumps
Reader Response, Part 2: Why Did Water Flow Reduce So Drastically?
Reader Mike Dominik, senior project manager at Orbital Engineering, Inc., explores the answer to the quiz question.
Lev Nelik
Pumps
Reader Response: Why Did Water Flow Reduce So Drastically?
Dr. Lev Nelik responds to an answer from his September column.
Jim Elsey
Pumps
The Effects of Elevation on Pump Systems
Lev Nelik
Pumps
Solution to Quiz: Why Did Water Flow Reduce So Drastically?
In the September issue of Pumps & Systems, a question was posed to our readers about water consumption and the cost of watering a small residential garden.
Quiz: Why Did Water Flow Reduce So Drastically?
Pumps
Quiz: Why Did Water Flow Reduce So Drastically?
Jim Elsey Headshot
Pumps
If a Pump Fails in the Facility, Does It Make a Sound?
Understanding noise and its importance.
Lev Nelik Headshot
Pumps
Solutions: What Makes the Meter Turn?
Nelik responds to reader answers.
Lev Nelik
Pumps
Pumping Predictions
From January 2010: Pumps and Systems in Transcontinental Energy Transfer
Lev Nelik
Pumps
Quiz: What Makes the Meter Turn?
Can you find the answer to this mini quiz?
Jim Elsey
Pumps
Now Is the Winter of My Discontent
Air bubbles are different from vapor bubbles.
jim elsey
Pumps
NPSHr Doesn’t Play by the Rules
It is important to test for NPSHr if the predicted NPSH margin is low.
Jim Elsey
Pumps
Starting Transformer Oil Pumps at Low Temperatures
Jim Elsey
Pumps
How I Spent My Summer Vacation
The summertime adventures of George the Pump.
Lev Nelik
Pumps
Vertical Turbines Repair Standard (VPRS), Part 4
An example of how decisions on picking one level versus another are made (continued).
Lev Nelik
Pumps
Vertical Pumps Repair Specification (VPRS), Part 3
An example of how decisions on picking one level versus another are made.
Lev Nelik
Pumps
Vertical Pumps Repair Specification (VPRS), Part 2
There is a structured document—a repair standard—in which different levels of repair can be applied.
jim elsey
Pumps
Conducting Due Diligence For the System Resistance Curve
Procedure for inspecting systems to troubleshoot problems.
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How FKAA’s hurricane-proof SWRO plant triples energy efficiency.
Testing for PFAS in Drinking Water: Frequently Asked Questions
Laboratory and field pilot testing for the design and evaluation of media for removal of PFAS compounds.
The Gift of Clean Water
Discovery of Chloronitramide Anion Raises New Water Treatment Questions
Further studies will be required to determine health risks.
Navigating 1,4-Dioxane Compliance
Exploring next steps for water utilities.

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