China’s pump industry serves farms, factories, buildings, mines, and municipal water systems. The equipment varies widely. A pump moving clean water through a high-rise has a different job from one handling abrasive slurry or thick oil. This guide explores ten widely used types of pumps in China, including centrifugal, multistage, submersible, sewage, diaphragm, gear, screw, and metering pumps. It is a practical overview, not an official sales ranking; availability and popularity vary by region and application.
Pump selection depends on more than the product name. Flow rate, head, fluid properties, operating temperature, and maintenance access all matter. A small detail can change the choice. Think of a narrow pump room, a fluid carrying grit, or a system that must run continuously. Pump engineer Igor J. Karassik’s work is associated with careful, system-based pump selection. A useful editorial rule in that spirit is: “Choose for the duty, not just the pump type.” This is a guiding summary, not a verified direct quotation.
The categories can overlap. A submersible pump, for example, may also be designed for sewage or drainage. That makes labels useful, but imperfect. The sections ahead explain how each type works, where it is commonly used, and what buyers should compare before choosing. No single pump suits every site. The best match is often less obvious than the catalogue makes it seem.
How Pumps Are Classified in China
In China, pump classification usually starts with the way a machine transfers energy. Rotodynamic pumps include centrifugal, axial-flow, and mixed-flow designs; positive-displacement pumps include gear, screw, diaphragm, and plunger types. The distinction matters: a centrifugal pump suits steady water circulation, while a plunger pump can deliver small, controlled volumes at higher pressure. Some labels overlap. A unit may be centrifugal, multistage, horizontal, and intended for water supply—all at once.
Engineers also sort pumps by structure, installation, liquid, and duty. Common descriptors include single-stage or multistage, submersible or surface-mounted, and clean-water or slurry service. China’s GB/T 3216-2016 standard addresses hydraulic performance acceptance tests for rotodynamic pumps; it supports performance comparison, not a complete naming system. A practical caution: product catalogs may group pumps differently, so check the operating curve and specified liquid, not just the category name.
Energy use helps explain why correct selection matters. The U.S. Department of Energy’s 2002 industry sourcebook, Improving Pumping System Performance, reports that pumping systems use nearly 20% of global electricity and can account for 25–50% of energy use in some industrial plants. These are broad international figures, not China-specific measurements. Still, they show why matching flow and head to actual demand is important. Oversizing is easy to miss. It can leave a pump throttled for years.
This practical overview covers ten pump types used across Chinese industry, utilities, agriculture, and building services. The list is not a market-share ranking. Classification systems may overlap: for example, a submersible pump describes an installation arrangement, while centrifugal describes its operating principle.
| No. | Pump Type | How It Works | Typical Flow and Pressure Characteristics | Common Applications | Suitable Fluids and Considerations |
|---|---|---|---|---|---|
| 1 | Centrifugal Pump | A rotating impeller transfers energy to the liquid, which is guided through the casing and discharged. | Generally suited to continuous flow. Available in designs for low to high flow and a range of heads. | Water supply, irrigation, industrial circulation, cooling systems, and municipal services. | Commonly handles clean or moderately contaminated liquids. Material and seal selection depend on temperature, corrosion, and solids content. |
| 2 | Axial-Flow Pump | A propeller-like impeller moves liquid mainly parallel to the pump shaft. | Designed for very high flow at relatively low head. | Drainage, flood control, irrigation, and circulation in large water systems. | Typically used for water and other low-viscosity liquids. Installation and operating conditions affect performance. |
| 3 | Mixed-Flow Pump | The impeller moves liquid in both axial and radial directions. | Combines higher flow than many radial-flow designs with more head than a typical axial-flow pump. | Agricultural irrigation, drainage, water transfer, and some industrial water systems. | Usually selected for water-like liquids. The required flow, head, and intake conditions guide model selection. |
| 4 | Reciprocating Piston or Plunger Pump | A piston or plunger moves back and forth in a chamber, drawing in and displacing a measured volume of liquid. | Can produce high pressure at comparatively low flow. Flow is often pulsating unless damped. | Pressure testing, metering, hydraulic systems, and high-pressure cleaning or process duties. | Can handle many liquids, subject to the pump’s materials, seals, viscosity limits, and solids tolerance. |
| 5 | Diaphragm Pump | A flexible diaphragm changes chamber volume to draw in and discharge liquid; check valves control flow direction. | Positive-displacement operation; flow is commonly pulsating. Designs vary from low-pressure transfer to higher-pressure service. | Chemical dosing, wastewater treatment, paint and coating transfer, and handling of certain slurries. | Can isolate the liquid from drive components. Diaphragm and valve materials must be compatible with the fluid. |
| 6 | Gear Pump | Rotating gears carry liquid from the inlet to the outlet in spaces between the gears and casing. | Positive-displacement flow; commonly suited to steady transfer of viscous liquids at moderate to high pressure. | Lubrication systems, fuel transfer, hydraulic equipment, and industrial process lines. | Best suited to clean or suitably filtered liquids. Abrasive solids can cause wear, and viscosity affects performance. |
| 7 | Screw Pump | One or more rotating screws move liquid along the pump axis in cavities formed by the screw and casing. | Positive-displacement operation with relatively smooth flow; designs cover a broad range of flow and pressure duties. | Oil transfer, process industries, wastewater service, and some marine or industrial systems. | Depending on design, it can handle viscous liquids and some liquids containing solids. Wear and fluid compatibility should be assessed. |
| 8 | Rotary Vane Pump | Sliding vanes in a rotor form changing-volume chambers that move liquid through the pump. | Positive-displacement flow, commonly used for relatively steady transfer at moderate flow rates. | Fuel handling, lubrication, and transfer of selected industrial liquids. | Fluid cleanliness, lubricity, temperature, and material compatibility are important to vane life and performance. |
| 9 | Peristaltic Pump | Rollers or shoes compress a flexible tube, pushing liquid forward while the fluid remains inside the tube. | Positive-displacement metering or transfer; flow is pulsating and depends on tube size and drive speed. | Precise dosing, laboratory processes, water treatment, and transfer of shear-sensitive or abrasive liquids. | The tube separates the liquid from the pump mechanism. Tube material and replacement interval depend on the fluid and duty cycle. |
| 10 | Jet Pump | A high-velocity motive-fluid jet creates a low-pressure region that entrains and moves another fluid. | Has no conventional rotating impeller in the pumped-fluid passage; efficiency and capacity depend on system conditions. | Water lifting, priming, mixing, and selected industrial or utility applications. | May have few moving parts in the fluid path, but requires a motive-fluid supply and appropriate system design. |
Across China’s factories, farms, construction sites, and water systems, pump needs vary with flow, pressure, and fluid quality. The ten common types include centrifugal, self-priming, submersible, slurry, gear, screw, diaphragm, piston, multistage, and axial-flow pumps. No single type suits every job.
Centrifugal pumps move clean water in buildings and process lines. Self-priming models can handle interrupted suction, while submersible pumps work below the water surface in wells or drainage pits. Slurry pumps use tougher wet ends for abrasive mixtures. Gear and screw pumps move viscous fluids steadily; diaphragm and piston pumps are useful when controlled dosing or higher pressure matters. Multistage pumps build pressure through several impellers. Axial-flow pumps move large volumes at relatively low head, often for drainage or irrigation.
Details matter. A small amount of grit can wear a pump designed for clean water. Operators should compare the liquid, temperature, flow rate, and required head before choosing. Installation and maintenance matter, too. A sound selection still needs good alignment, suitable seals, and regular checks. The categories overlap in real installations, so a list cannot replace site measurements. That part deserves a second look.
Pump types differ by how they move liquid and create pressure. Centrifugal pumps use a spinning impeller for steady flow, while axial-flow pumps push large volumes along the shaft. Mixed-flow designs combine both actions. Multistage pumps pass liquid through several impellers to build higher pressure. Submersible pumps operate underwater; self-priming models help clear air from their suction lines.
Positive-displacement pumps trap and move measured volumes. Diaphragm pumps flex a membrane, piston pumps use a reciprocating stroke, gear pumps carry liquid between rotating teeth, and screw pumps move it along turning screws. Their flow is less dependent on discharge pressure than centrifugal flow. The categories can overlap in real equipment, so labels alone do not tell the whole story. The U.S. Department of Energy’s Improving Pumping System Performance sourcebook reports that pumping systems use nearly 20% of global electricity demand. That makes operating conditions matter.
Tips: Match the pump to flow, head, liquid viscosity, and solids content. Check the system curve, not just the nameplate. A small mismatch can waste energy—or cause vibration and wear. Always verify the figures against the actual installation.
Across China, pump demand follows water movement: from Yangtze Delta factories to dry northern irrigation districts. The Ministry of Water Resources’ China Water Resources Bulletin 2023 reports 590.7 billion cubic metres of water use. Agriculture accounted for 62.2%, industry 16.2%, and household use 15.5%. Axial-flow and centrifugal pumps support irrigation and drainage, while multistage units help move water through high-rise buildings and long pipelines. Conditions vary sharply by region.
Cities rely on centrifugal and submersible pumps in water supply, sewage networks, and treatment plants. The Ministry of Housing and Urban-Rural Development’s 2022 Urban Construction Statistical Yearbook puts China’s urban wastewater treatment rate above 98%. That figure signals extensive treatment infrastructure, but it does not mean every site has the same flow or solids load. Mines and energy facilities also use slurry, process, and high-pressure pumps. A tidy national picture can hide difficult local operating conditions.
Tip: Match the pump to flow, head, fluid, and operating hours—not just pipe size. Check the duty point. Ask operators about seasonal changes and clogging history; those details are easy to overlook, and specifications alone may not reveal them.
Choosing among common pump types in China starts with the fluid and duty, not the catalog label. Record the required flow rate and total head under real operating conditions. A pump sized only for peak demand may run inefficiently on ordinary days. Note temperature, viscosity, solids, and corrosive or abrasive content. A centrifugal pump may suit steady clean-water transfer, while viscous liquids or precise, low-volume dosing may need another design. No type fits every plant. Check the system curve, suction layout, and available NPSH; poor suction conditions can cause cavitation, noise, vibration, and premature wear.
Installation matters too. Measure pipe length, elevation changes, bends, and discharge pressure, then check motor power and expected operating hours. Energy matters over years. Review seal and wetted-material compatibility against the actual fluid, not a vague description such as “mildly corrosive.” For intermittent service, consider frequent starts; for continuous operation, assess heat, bearing access, and maintenance intervals. Keep spare parts and local service capability in view when downtime is costly. A performance curve and test data help, but confirm that the stated duty point matches the site. Not always. A selection that looks sound on paper can fail under field conditions. Leave a reasonable operating margin, but avoid oversizing, which can waste energy and require needless throttling. Operators may know the blockage history better than the drawings.