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Lev Nelik

Diagram
Pumps
Determining Static Component of System Curves
Lev Nelik responds to readers' questions related to system curves and boiler feed systems.
Pumps
Proper Gauge Positioning
Lev Nelik responds to readers' questions about calculating and estimating pipe velocity
Gauge Correction & Velocity Head Correction Can Matter
Pumps
Gauge Correction & Velocity Head Correction Can Matter
Lev Nelik responds to readers' questions about calculating and estimating pipe velocity
Calculating vs. Estimating Pipe Velocity
Pumps
Calculating vs. Estimating Pipe Velocity
Columnist Lev Nelik says it is important to know when you can use a shortcut, and when to go the long way.
Readers Respond to ‘A Step-by-Step Approach to Pump Selection’
Pumps
Readers Respond to ‘A Step-by-Step Approach to Pump Selection’
Lev Nelik explains calculations from the Moody diagram.

Pumps
A Step-by-Step Approach to Pump Selection
Consider pipe sizing and motor power requirements before picking your pump.
Bearings
Pumps & Systems Looks Back: Pump Design Changes Improve Lubrication
Quantifying the benefits of modifications.
Energy Efficiency for River in the Desert
Pumps
Energy Efficiency for River in the Desert
Lev Nelik answers reader's question about an Israeli infrastructure water project.
Developing Water Infrastructure Project in Israel
Piping
Developing Water Infrastructure Project in Israel
Choosing fresh water or salt water for a man-made river
Pumps
Middle East: What’s New with Water Pumping Challenges in Israel?
Lev Nelik explains water distribution developments in Israel.
Valves
Pumps-to-System Control of Power Plant Boiler Feed Pumps
Dr. Nelik and other experts make recommendations for an engineer in a Middle Eastern plant.

Seals
Seal Damage Due to Loads
Casing changes cause efficiency effects.
Pumps
Seals: Skinny Shaft Design or Improper Operation?
Pumping Prescriptions
Various Ways to Determine Pump Flow in the Field
Pumps
Various Ways to Determine Pump Flow in the Field
Pumping Prescriptions
Pumps
Letter from a Reader
Pumping Prescriptions
Failure Prediction with Online Monitoring
Pumps
Failure Prediction with Online Monitoring
Pumping Prescriptions
Pumps Field Efficiency Testing Automation
Pumps
Pumps Field Efficiency Testing Automation
Pumping Prescriptions

Case Study: Troubleshooting Seal Problems in Cooling Water Pump Solution, Pump 4
Pumps
Case Study: Troubleshooting Seal Problems in Cooling Water Pump Solution, Pump 4
Pumping Prescriptions
Staff Blog
Meet the Pumps & Systems Columnists
As we celebrate National Columnist's Day, learn more about our monthly authors.
Case Study: Field Efficiency Testing for Pumps
Pumps
Case Study: Field Efficiency Testing for Pumps
Pumping Prescriptions
Pumps
Troubleshooting Mechanical Seals in Vertically Mounted Pumps
Pumping Prescriptions
Case Study: Troubleshooting Seal Problems in Cooling Water Pumps, Part 3
Pumps
Case Study: Troubleshooting Seal Problems in Cooling Water Pumps, Part 3
Pumping Prescriptions

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Digital Partners

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The Advantages of Gas Seals in Process Pumps
An in-depth look at gas seals and their functions.
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What Is Pump Proportional Pressure Control?
Proportional pressure is a control method that varies the speed of the pump according to a pressure algorithm.
What Does 3D Printing Actually Bring to Fluid Motion?
How this technology can provide solutions in times of supply chain uncertainty.
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Material Selection: Pumping Corrosive & Hazardous Chemicals
What to know about fluid to get the best pump possible.

From Our Partners

Maximizing Product Recovery, Process Safety & Profit With Eccentric Disc Pumps
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The Hidden Costs of Pump Failure & How to Avoid Them
This session will unpack the full cost of pump-related downtime, and also share tips for preventing these issues using proven best practices.

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Chesterton
Driving Operational Excellence in the Chemical Industry
Reduce cost and increase efficiency with proactive asset health underpinned by purpose-built AI.

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Beyond Steady-State: Thermal Transient Modeling & Failure Analysis
Learn how to simulate equipment failure scenarios and how flow and temperature impact systems over time plus much more in this webinar.

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PIPE-FLO from Revalize
Lubrication Solutions for Wastewater Treatment
Oil sight glass can improve lubrication management and prevent severe damage.

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Esco Products, Inc.
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