Choosing the wrong pump type doesn't just hurt efficiency, it can lead to premature failure, costly downtime, and safety risks. With so many pump types available, from centrifugal to multistage to slurry and screw pumps, it's easy to default to whatever's familiar rather than what's actually right for the application.
This guide breaks down the four most common industrial pump types, how they work, and when each one makes sense.
What Is a Centrifugal Pump?
Centrifugal pumps are the most widely used pump type in industrial applications. They move fluid using a rotating impeller that converts rotational energy into kinetic energy, pushing fluid outward through centrifugal force.
Best for:
- High flow rate, low to moderate pressure applications
- Water transfer, cooling systems, general process flow
- Clean to moderately viscous fluids
Limitations:
- Performance drops with high-viscosity fluids
- Not ideal for applications requiring high discharge pressure in a single stage
What Is a Multistage Pump?
A multistage pump is a type of centrifugal pump that uses multiple impellers arranged in series. Each stage adds additional pressure, allowing the pump to achieve much higher discharge pressure than a single-stage centrifugal pump.
Best for:
- High-pressure applications: boiler feed, reverse osmosis, high-rise water supply, irrigation
- Situations where a single-stage pump can't generate enough head pressure
Limitations:
- More complex design means more maintenance points (multiple seals, bearings)
- Generally higher upfront cost than single-stage centrifugal pumps
Browse our current multistage pump inventory to see available units and specifications.
What Is a Slurry Pump?
Slurry pumps are heavy-duty centrifugal pumps engineered specifically to handle abrasive, high-solids-content fluids, think mining tailings, dredging operations, or wastewater with heavy particulate.
Best for:
- Abrasive or high-solids fluids (mining, aggregate, wastewater treatment)
- Applications where standard centrifugal pumps would wear out quickly
Limitations:
- Not designed for clean, low-viscosity fluids where a standard centrifugal pump would be more efficient
- Heavier-duty construction typically means a higher cost per unit
What Is a Screw Pump?
Screw pumps are a type of positive displacement pump that use one or more rotating screws to move fluid through the pump chamber at a constant rate, regardless of pressure changes downstream.
Best for:
- High-viscosity fluids (oils, chemicals, food-grade products)
- Applications requiring a consistent, steady flow rate rather than high flow volume
- Gentle handling of shear-sensitive fluids
Limitations:
- Lower flow rates compared to centrifugal pumps
- Typically more expensive per unit of flow than centrifugal options
Comparison Table
|
Pump Type |
Best For |
Pressure |
Flow Rate |
Fluid Type |
|
Centrifugal |
General process flow |
Low–moderate |
High |
Clean, low viscosity |
|
Multistage |
High-pressure applications |
Low–moderate |
High |
Clean, low viscosity |
|
Slurry |
Abrasive/high-solids fluids |
Low–moderate |
High |
Abrasive, high solids |
|
Screw |
Viscous or shear-sensitive fluids |
Moderate |
Low–moderate |
High viscosity |
How to Choose the Right Pump for Your Application
Ask these questions before selecting a pump:
- What's the fluid? Clean water, viscous oil, or an abrasive slurry all call for different pump designs.
- What pressure do you need? If your application needs high discharge pressure, a multistage pump is likely the better fit over a standard centrifugal.
- What flow rate is required? High-volume applications typically favor centrifugal designs; steady, controlled flow favors positive displacement pumps like screw pumps.
- How abrasive is the fluid? Standard centrifugal pumps wear out quickly under abrasive conditions. A slurry pump is built to handle that wear.
If you're not sure which category fits your application, our team can help match your specs to the right pump before you buy.
Frequently Asked Questions
What is a multistage pump used for? Multistage pumps are used in applications requiring high discharge pressure, such as boiler feed systems, reverse osmosis, high-rise building water supply, and irrigation systems, by using multiple impellers in series to build pressure in stages.
Are multistage pumps more efficient than single-stage pumps? For high-pressure applications, yes. A multistage pump can achieve the pressure a single-stage pump would need to run at an inefficient speed to reach, if it could reach it at all.
What's the difference between a centrifugal pump and a screw pump? Centrifugal pumps use a rotating impeller to move fluid via centrifugal force and are best for high-flow, low-viscosity applications. Screw pumps are positive displacement pumps that move fluid at a constant rate regardless of pressure, making them better suited to viscous or shear-sensitive fluids.
Can a slurry pump handle clean water? Yes, but it's not the efficient choice. Slurry pumps are built with heavier-duty materials to resist abrasion, which typically makes them more expensive and less efficient than a standard centrifugal pump for clean, low-solids fluids.
How do I know if I need a new or used pump? It depends on your budget, timeline, and application criticality. Used and surplus pumps, when properly inspected and verified, can offer significant cost savings with minimal performance tradeoff. [Read our guide on new vs. used vs. surplus equipment] for a full breakdown.
Looking for a specific pump type? Browse our full pump inventory or request a quote and our team will help match the right equipment to your application.
