Gain In-Depth Knowledge on Total Discharge Recirculation

Christian LindTech TalkLeave a Comment

In previous blogs we have defined Cavitation and reviewed Discharge Cavitation.  In this blog I would like to discuss a specific type of discharge recirculation known simply as “Total Discharge Recirculation” or “TDR” for short.  All forms of pump recirculation, as the term denotes, evolve some portion of the liquid not following the desired path.  When referencing total discharge recirculation, the difference is … Read More

Gain In-Depth Knowledge on Discharge Recirculation

Christian LindTech TalkLeave a Comment

In our last blog we discussed cavitation singling out suction cavitation to illustrate the concept. In this blog, as promised, we will discuss discharge recirculation, also sometimes referred to as discharge cavitation.  The term discharge recirculation is often used interchangeably with the term discharge cavitation.  Although these two are clearly related they have a few distinct differences.  Let us first examine discharge recirculation. … Read More

Gain In-Depth Knowledge on Cavitation

Christian LindTech TalkLeave a Comment

What it is and how it works Cavitation is potentially the most destructive force at play within a pumping system, however it is the least understood issue by many pump operators. To quote Sun Tsu from the Art of War, “know thy enemy”. In this blog, we will discuss our enemy cavitation and how it relates to pump cavitation. This article … Read More

Gain In-Depth Knowledge on Velocity Head

Christian LindTech TalkLeave a Comment

Gain In-Depth Knowledge on NPSHA In this blog we will discuss Velocity Head as it is the final component left of our 6 part NPSHA blogs and the one we have avoided addressing previously. Reference books would describe velocity head as a basic concept of fluid engineering that represents the bulk motion, i.e. the kinetic energy, of the fluid. It can … Read More

How To Prime Your Industrial Slurry Pump?

Christian LindPumpsLeave a Comment

Let’s get into priming your industrial pump Did the POTUS really coin this phrase and what does it mean? Today the President of the United States of America, Donald Trump, put the pump industry into the mainstream by claiming to have coined the phrase “priming the pump”.  In doing so he highlighted one of the basic principles of pumping and … Read More

NPSHA (Available Inlet Pressure)

Christian LindTech TalkLeave a Comment

Gain In-Depth Knowledge About Our Pumps & Industry In the last blog of this series we explained why a pump requires a positive inlet pressure and introduced the term NPSHR.  As promised, this blog we will investigate the counterpart of NPSHR, Net Positive Suction Head Available  (NPSHA). The pressure available at the pump inlet is a summary of multiple factors. These factors, all expressed in the same units (normally feet of … Read More

Required Inlet Pressure or NPSHR

Christian LindTech TalkLeave a Comment

Gain In-Depth Knowledge About Our Pumps & Industry In my first blog we argued that pumps don’t suck, they actually rely upon atmospheric pressure to push liquid into the impeller. In my second blog, I explained how atmospheric pressure can be expressed in feet of head.  In this blog we will discuss how pressure, measured in feet of head, may or may not satisfy a … Read More

Atmospheric Pressure in Feet of Head

Christian LindTech TalkLeave a Comment

Gain In-Depth Knowledge About Our Pumps & Industry In last weeks blog we touched briefly on the subject of atmospheric pressure.  I wanted to write today’s blog to ensure you understand exactly what atmospheric pressure is and why it affects you and your pumps. As illustrated below, the weight of the air in a 1 inch square column extending to the edge of outer … Read More

Do Pumps Suck?

Christian LindTech TalkLeave a Comment

Gain In-Depth Knowledge About Our Pumps & Industry I will begin this blog by posing a question: Does suction really exist?  Take a moment, decide upon your answer and let’s go on this journey together. A majority of people in the pumping industry would say yes, suction has to exist. If you were to ask any ten year old child with … Read More

What Are The Best Delayed Coker Maze Pit / Clearwater Pumps?

Christian LindPumpsLeave a Comment

Gain In-Depth Knowledge About Our Pumps & Industry The pumping of water packed with coke fines produced by the jet cutting process in a Delayed Coker Unit (DCU) is an aggressive application. Pumps commonly fail or have reduced operating lives for a variety of reasons including: heavy fines loading, challenging suction conditions, high temperatures, and deep set sumps all combine to … Read More