As a pump supplier with over 45 years of industry experience, we understand that customers often have questions and uncertainties when it comes to purchasing a pump. In order to help you make an informed decision, we've broken down the key information you need to know into five categories: fluid, flow, discharge, suction, and options. Our blog will provide you with a set of questions to consider, as well as helpful links to expand your knowledge on these topics.
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Fluid
- What you are pumping (water, oil, slurry, etc.)
- What is the specific gravity and viscosity of your fluid?
- Are chemicals present? What are the names and concentrations?
- Are there solids? What is the particle size, percentage of fluid that are solids, & are they smooth or sharp?
- What is its temperature? (Ambient is 20°C)
Flow - The rate you want to transfer the fluid at.
- Are you decanting, dosing or transferring?
- Are chemicals present? What are the names and concentrations?
Discharge – The line from pump to discharge point.
- What will the vertical and horizontal lengths be?
- Have you taken friction loss into account? (Pipe type, viscosity, etc. affect this)
- Are you dosing or transferring into a pressured pipe, if so what is the pressure? Or is it open free flow?
Suction – The line from source to pump.
- What’s the length of the suction line?
- Will you need a self-priming pump?
- Are you pumping from a dam/well or is it flooded suction?
Options – Preferences and accessories.
- Identify your preferred power source and check stability (240v, 415v, 50/60 Hz, mining/industrial, diesel, petrol, air, etc.)
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Additional reading:
What is a Slurry Pump and How Does it Work?
- Check to see if you’ll require
What is the purpose of a slurry pump?
Trash Self Priming Pump base plates, trollies for transportation, variable speed, etc.
Definitions (For more pump terms see our Glossary of Pump Terms)
Base plate: The plate on which the pump and motor are mounted.
Decanting: Gradually pumping from one container into another.
Dosing: A controlled method of pumping in order to discharge exact amount of fluids.
Flooded suction: If the pump is below the liquid source, and the suction is fed by gravity. This is a preferred method for centrifugal pumps.
Fluid: A state of material that continually deforms under an applied shear stress. Gas, liquid and plasma are examples.
Friction loss (pump): Friction between the pump and the process fluid results in loss of pressure. Different parts of the pump are more susceptible to this force than others.
Friction loss (pipe): The force produced as the process fluid flows through the pipes of a system. Caused by movement of the fluid internally as one fluid layer moves against another. Also caused by movement of the fluid against the pipe wall. Rougher pipes will lead to higher friction.
Open free flow: When the discharge pipe or hose is fully open at the end with no restrictions.
Self-priming pump: A pump that contains a reserve amount of process fluid that helps to create an initial vacuum and lift fluid from the source.
Specific Gravity (SG): The ratio of the density of a substance compared to the density of a reference (usually water at 4°C).
Suction line: The suction line of a pump system is piping which transports fluid material from its source to the pump itself.
Transferring: To move a substance, usually a liquid, from one place to another.
Variable speed motor: Can be used to control flow in the system by varying the impeller speed.
Viscosity: Resistance to gradual deformation of a fluid by shear or tensile stress.
What is a Slurry Pump?
There are many different types of pumps available, and most pumps are designed for a specific purpose or type of application. Pumps that are designed to transfer thin fluids are different from pumps that are designed for thick, solid-laden, abrasive, heavy materials. Due to the difference in pump design between different types of pumps, it is very important that the most appropriate pump be selected for your slurry application.
Slurry pumps are designed for pumping thick materials that can consist of such things as slurries, sand, gravel, mud, crushed rock, muck, manure, and many other highly viscous materials. Typically, a slurry is a mixture of a given material such as crushed rock and water. A slurry pump has the ability to move difficult thick material from the material source, into and through the pump, and downstream to its final destination.
Slurry pumps are inherently rugged by the nature of what they do and are capable of pumping high viscous and high specific gravity solid-laden slurries without clogging. The non-clogging aspect of a slurry pump design is one of the most critical differentiating factors compared to other pump types. These pumps perform in some of the harshest environments a pump could be applied to and are used in many industries including dredging, oil & gas, mining, frac sand pumping, and many other industries.
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