A rusty impeller blade with signs of cavitation.

Gain In-Depth Knowledge on Cavitation

Angus EwartTech 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

Slurry being pumped out at a mine.

Velocity Head

Angus EwartTech 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 NPSH 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

Slurry being pumped out into a pond.

How to Prime your slurry pump?

Angus EwartPumpsLeave 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

slurry pumps being used to move slurry around.

NPSHA (Available Inlet Pressure)

Angus EwartTech 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

Slurry pumps being used in an industry solution.

Required Inlet Pressure or NPSHR

Angus EwartTech 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

A image of earth and arrows demonstrating the direction of gravity.

Atmospheric Pressure in Feet of Head

Angus EwartTech 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

A slurry pump in use at an oil refinery.

Do Pumps Suck?

Angus EwartTech Talk1 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

Hevvy Pumps famous slurry pumps lined up all together.

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

Angus EwartPumpsLeave 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

Velocity and flow readings of a slurry pump.

The Future of Custom Design and Development

Angus EwartTech TalkLeave a Comment

Computational Fluid Dynamic Software Saves Time and Money Through Simulation At Hevvy/Toyo Pumps we utilize the latest in technology to solve our customer’s problems. Whether it’s a custom impeller and volute for a specific customer application, a new impeller capable of transporting the heaviest solids in the most efficient manner, putting in time researching how wear might affect existing designs or our team developing … Read More

Hevvy Pumps famous slurry pumps lined up all together.

Ghost in the Pump

Angus EwartService AdventurerLeave a Comment

Pumping Industry Solutions I received a call from a customer that one of our new pumps was acting up. The pump would quit pumping and then all of a sudden start again. They pulled the trouble pump out of service, replaced it with a spare, and asked me to come on site to perform an inspection. I arrived onsite and with the help of customer’s … Read More