Establishing an impeller’s “Tip Speed” is very useful when selecting the best pump for your application, but what exactly is tip speed and how do you calculate it? The tip speed is simply the distance that any selected point on the peripheral of the impeller travels in a set time. In other words the “speed” of that point. To calculate … Read More
Differences Between Flush and Quench In Slurry Pump Seal Support Plans
When discussing slurry pump seal support plans it seems that the terms “Flush” and “Quench” are often confused and or misused. With the concept being slightly different for mechanical seal boxes vs packed seal boxes I will separate these, discussing each in turn. Mechanical Seal The basic mechanical seal flush plan is very simple. It calls for a clear/clean liquid, … Read More
Pumping Cow Manure
I just thought I would share my latest adventure. It was quite smelly to say the least. We had a customer who bought a HS-E81-80 pump for a dairy farm. Now who would have thought that a manufacturer that produces the best slurry pumps in the world would be called upon to provide a pump for a dairy. This pump … Read More
Impeller Designs
I recently received an e-mail asking to explain what the terms “open” or “closed” referred to when discussing impellers in a slurry pump. So here it is. Although there are numerous styles/designs offered by pump manufacturers, most slurry pump offerings boil down to a variation of one of two basic designs, with a third design, slightly less common, that is … Read More
Checking The Condition Of A Submersible Pump Motor
Whether it be a submersible pump you already own or a used pump you are looking to buy, it is important to know the condition of the electric motor. A few quick checks can save you a bunch of time and or money. The most common problem in a submersible pump motor is water ingress. Whether it be entry though … Read More
To Check or not to Check?
I often receive questions as to whether a check valve in a pumping system is a good or a bad thing. Auto closing check valves are often an integral part of a successful pumping system; however, they can also be the root of many system failures. The question then becomes “when is it appropriate to incorporate check valves in a … Read More
Single Phasing in Electric Motors
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? … Read More
Slurry Pumps: The Ultimate Preventive Maintenance Guide
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
6 Pipeline Flow Issues and How to Avoid Them
One of a pump operator’s worst fears is a plugged pipeline. Some believe this to only be a concern when dealing with extremely heavy slurries but this is far from the truth. Today we will discuss several causes of plugged lines and how to avoid these highly expensive and time-consuming problems. 1. “Sanded in” Is the most common form of … Read More
The Future of Custom Design and Development
Computational Fluid Dynamic Software Saves Time and Money Through Simulation At Hevvy/Toyo Pumps we utilize the latest in technology to solve our customers’ 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 … Read More
