An image explaining the difference between malleability and ductility.

What is the Difference Between Malleability and Ductility?

Angus EwartTech Talk, UncategorizedLeave a Comment

In the blog article, “Thermal Shock” I used the word ductility. This word is one of a handful of terms commonly used to describe the characteristics of metals and how they react to externally applied forces. Terms such as malleability, hardness, brittleness, toughness, abrasion resistant and impact resistant are commonly used when describing metals but not always completely understood. THE DIFFERENCE BETWEEN … Read More

Beat the Rush

katharinemillsTech TalkLeave a Comment

Thank you to everyone who sent in questions to info@hevvypumps.com . We have taken one of the top questions and answered it below! Frequently asked Question: Should we install a vfd to control our pump? Background Variable frequency drives, or VFDs, do pretty much what their name suggests. They drive electric motors at variable frequencies providing significantly more control than … Read More

Single Phasing in Electric Motors

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Causes and Solutions to Protect your Motor I once had a customer ask me for some advice to help them come up with some ideas as to why their pump would trip as soon as it was lowered into slurry.I asked questions such as: Have you checked for proper rotation? Did you check for pluggage in the discharge line? After … Read More

No Flow Meter, No Problem

katharinemillsTech Talk1 Comment

The Open Pipe Flow Measurement Method Over the years our team has been involved in countless pump start ups, many of which were field applications where instrumentation was non existent.  There is always an expectation of a specific flow rate or at least a minimum flow rate. Without a flow meter, how do you know if your pump is performing with … Read More

What is the Number One Cause of Pump Motor Failure and How Can it be Prevented?

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According to our electrical team, heat is the number one cause of motor failure. It simply kills them. Temperatures near or above the insulation rating of your motor will cause your motor’s insulation to deteriorate faster, ultimately resulting in premature motor failure. Defining the starting limit for your pump’s electric motors  Our team is often asked one important question: How … Read More

Slurry pump being used out in the field while being sprayed with water.

Slurry Pumps: The Ultimate Preventive Maintenance Guide

Angus EwartPumpsLeave a Comment

Are your slurry pumps in good condition? I travel to customer sites on a weekly basis and I see a full range of good and bad when it comes to pump maintenance. I decided to write a blog on the most common preventive maintenance tips concerning the Hevvy/Toyo line of pumps so it’s available even when I’m not. This list … Read More

Thermal shock breaking ice.

Thermal Shock

Angus EwartTech TalkLeave a Comment

Our blog on “Total Discharge Recirculation” mentioned thermal shock as a destructive force that can damage or destroy pump components.  With how destructive this force can be, I thought it necessary to spend some time expanding upon this subject. Wikipedia explains that thermal shock occurs when a thermal gradient causes different parts of an object to expand by different amounts.  This … Read More

A mine filled with ice and water.

The Challenge of Underground Mine “Dewatering”

Angus EwartMining, PumpsLeave a Comment

In-depth Knowledge on Solving Seal Failure in Dewatering Applications If you are an owner, operator or user of Electric Submersible pumps in Mine Dewatering and currently experience multiple seal failures within one year of start-up and installation… Please read on. Additionally, if you are a fellow professional in the field that wishes to share observations and constructive comments then please … Read More

Water boiling in a pot.

Total Discharge Recirculation

Angus EwartTech TalkLeave a Comment

Gain In-Depth Knowledge on Discharge Recirculation 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 … Read More

An impeller blade with serious signs of cavitation.

Defining Discharge Recirculation

Angus EwartTech TalkLeave a Comment

Gain In-Depth Knowledge on Discharge Recirculation 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.  … Read More