This article analyzes the available pump types for specific media to help you make a faster and more effective selection, and also provides some data for your reference.
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1.Working condition characteristics analysis
Medium characteristics
Strong acidity: pH=2 is a strong acid environment, and the acid corrosion resistance of the material needs to be considered
Oxidation: The medium has oxidizing properties, and the material's antioxidant capacity needs to be evaluated
Containing solid particles: The presence of small sand particles will cause wear problems (it is recommended to confirm the particle size distribution and concentration)
2.Material selection
2.1 It is recommended to use PTFE (polytetrafluoroethylene) or F46 lined pump body, which has the following features:
✓ Strong acid resistance (applicable to the full range of pH 0-14)
✓ Excellent oxidation resistance
✓ Smooth surface and not easy to scale
2.2 Mechanical seals are recommended to use SiC/SiC pairing, which is more resistant to particle wear than graphite
2.3 Key selection parameters
Required notes Speed ≤ rpm: reduce particle erosion and wear
Impeller type semi-open/open impeller: avoid blockage of closed impeller flow channel
Gap design is 0.3-0.5mm larger than standard pump to accommodate particle passage
Shaft seal type: double-end mechanical seal + flushing water (Plan53B external flushing solution is recommended)
3. Special design points
Wear-resistant structure
The impeller front cover is thickened by 2-3mm
A replaceable wear-resistant plate is set at the volute of the pump body
The surface of the flow-through parts can be hardened
4. Operation suggestions
It is recommended to install a Y-type filter at the inlet (the mesh size is determined by the particle size)
The minimum flow rate should be >30% Qn to prevent solid deposition
The flow channel should be flushed in time when the machine is shut down
5. Recommended typical models
Domestic: IHF80-65-160 fluoroplastic centrifugal pump (with wear-resistant modification kit)
Imported: CPK80-200F (with impeller for granular media)
If the budget is li mited, you can consider: FSB80-50-200 (need to confirm the actual particle parameters)
If you have better ideas, please leave a message. We are happy to learn new knowledge and provide better service.
Attached is the performance curve of our IHF chemical pump：
In the world of industrial production, liquid transfer is as crucial as blood flow in the body. Industrial pumps are the core driving force behind this “circulatory system.” However, industrial applications vary greatly, and each process has different requirements for pumps. This makes choosing the right pump even more critical. After all, the right equipment can not only improve efficiency but also save on maintenance costs and extend service life.
To help you navigate through the many options, this guide will walk you through the main types of industrial pumps. We hope this guide will provide you with clear insights, helping you find the perfect “liquid handler” that best suits your needs!
Industrial pump is a mechanical device used to move liquids—or sometimes gases—from one place to another in a controlled and efficient way. Unlike household pumps, industrial pumps are built to handle large volumes, high pressures, or harsh conditions commonly found in manufacturing, chemical processing, water treatment, oil and gas, and other heavy-duty applications.
They come in many types and sizes, but their goal is the same: to keep fluids flowing reliably through pipes, systems, and processes. Whether it’s transferring chemicals, circulating cooling water, or dosing precise amounts of liquid, industrial pumps are essential to keeping industries running smoothly.
Industrial pumps can be broadly classified into two main types based on their working principles:
Dynamic Pumps: These pumps rely on kinetic energy to move liquids. A typical example is the centrifugal pump.
Positive Displacement Pumps: These pumps mechanically change the volume of a sealed chamber to “push out” the liquid. Examples include peristaltic pump and diaphragm pumps.
Each type is suited to different fluid properties and operating conditions. In the sections below, we’ll delve into the features and applications of each category in more detail.
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Dynamic pumps move liquids by converting mechanical energy—usually from a rotating impeller—into kinetic energy, which is then transformed into pressure. These pumps are ideal for continuous, high-flow applications and are commonly used in a wide range of industries.
The centrifugal pump is one of the most widely used types of industrial pumps. It operates by using a rotating impeller to generate centrifugal force, which throws the liquid outward from the center of the impeller, increasing velocity and pressure to move the fluid through the system.
Axial flow pumps, also known as propeller pumps, move liquid along the direction of the pump shaft (axially), much like a boat propeller. They are specifically designed for situations that require very high flow rates at relatively low pressures (low head).
Mixed flow pumps combine the characteristics of both centrifugal and axial flow pumps. The liquid is discharged at an angle—partly radial and partly axial—making these pumps suitable for medium head and medium flow conditions.
Positive displacement pumps move fluid by trapping a fixed amount in a chamber and then forcing (displacing) it into the discharge pipe. Unlike dynamic pumps, they deliver a constant flow regardless of pressure, making them ideal for handling viscous fluids or applications requiring precise flow control.
Here are six common types of positive displacement pumps:
A gear pump operates using two meshing gears—either external or internal—that rotate to trap fluid in the spaces between the gear teeth and the pump casing.
As the gears turn, they carry the liquid from the inlet side to the outlet, producing a steady, pulseless flow. These pumps are known for their simplicity, durability, and ability to handle thick fluids.
A diaphragm pump moves fluid by the back-and-forth flexing of a diaphragm, which creates a change in volume inside the pump chamber. Check valves control the flow direction, making this type of pump ideal for transferring corrosive, abrasive, or hazardous fluids.
Since the fluid is isolated from the moving parts, it’s a top choice for clean and safe fluid handling.
Piston pumps use a reciprocating piston within a cylinder to draw in and force out liquid in a controlled manner. Each stroke of the piston displaces a specific volume, offering precise flow and high pressure.
These pumps are often used where accuracy and power are required, and they can handle a variety of fluids, including those with suspended solids.
Peristaltic pumps work by compressing a flexible hose or tube with rotating rollers, pushing the fluid forward in a peristaltic motion—much like how food moves through the digestive system.
Since the fluid only contacts the tubing, the pump ensures contamination-free transfer, making it ideal for sanitary or chemical-sensitive environments.
Screw pumps transport fluid by rotating one or more helical screws inside a closed chamber. As the screws turn, they create a continuous seal that moves the fluid smoothly along the axis.
They are particularly suited for high-viscosity, abrasive, or multiphase fluids, and are prized for their low pulsation and quiet operation.
Lobe pumps feature two or more lobed rotors that rotate in opposite directions without touching. The rotating lobes trap and transfer fluid efficiently while allowing large solids or delicate materials to pass through without damage.
Their gentle pumping action and easy-to-clean design make them favorites in the food, cosmetic, and pharmaceutical industries.
When it comes to selecting an industrial pump, “almost right” just doesn’t cut it. With so many types available, choosing the right one requires a solid understanding of your working conditions and fluid properties.
A well-matched pump not only ensures smooth operation but also minimizes maintenance costs and extends service life. Here are the key factors to consider:
Corrosive liquids? Choose pumps with corrosion-resistant materials like fluoroplastic centrifugal pumps or diaphragm pumps.
Contains solids or particles? Avoid pumps with narrow clearances (e.g., gear pumps); opt for screw pumps or slurry pumps.
High viscosity? Positive displacement pumps like peristaltic, screw, or lobe pumps perform better than dynamic ones.
Tip: Understand your fluid’s composition, temperature, viscosity, and whether it contains abrasives—these directly influence your pump choice.
High flow, low head applications (e.g., water supply or cooling): Centrifugal pumps are efficient and economical.
Low flow, high pressure needs (e.g., metering, spray systems): Go for plunger or diaphragm pumps.
Need precise volume control? Consider peristaltic or gear pumps.
Tip: If available, provide a flow vs. head curve to ensure the pump operates in its optimal range.
Frequent start-stops? Use pumps that are easy to prime and self-start (e.g., peristaltic or diaphragm pumps).
Explosion-proof requirement? Choose intrinsically safe or non-electric pumps (e.g., air-operated diaphragm pumps or spring starters).
Strict hygiene standards? For food, beverage, or pharma, select hygienic-grade centrifugal, lobe, or peristaltic pumps.
Tip: Assess if your system needs CIP/SIP, high-temperature resistance, or noise control features.
Some pumps (e.g., plunger pumps) require frequent seal replacement;
Others (like peristaltic pumps) offer easier maintenance by simply replacing tubing;
Gear pumps are long-lasting but sensitive to solids.
Tip: Evaluate how easy it is to service the pump, and how often it needs downtime for maintenance.
A cheaper pump may lead to higher operational or repair costs;
A more expensive, efficient pump may save more in the long run with better energy efficiency and lower maintenance needs.
Tip: Consider the total life cycle cost—initial price + energy use + maintenance—when comparing options.
Industrial pumps come in a wide variety, each designed for specific applications and with its own unique advantages. Understanding how different types of industrial pumps work and where they are best applied is essential for improving equipment efficiency and ensuring safe production.
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