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Things You Should Know about Axial Flow Pumps

Learn - May. 06, 2021

Axial flow pumps are centrifugal pumps that allow the pump to move axially through the impeller. They offer high flow rates and low heads, but some models can be adapted to operate efficiently under different conditions by changing the impeller pitch.

Axial pumps are dynamic pumps, which means that they use fluid momentum and velocity to generate pump pressure. Specifically, they are centrifugal pumps, which generate that velocity by using the impeller to apply centrifugal force to the moving fluid.

 Horizontal Chemical Axial Flow Pump

Axial flow pumps are one of the three subtypes of centrifugal pumps, the others being mixed flow and radial flow. Of these three types, axial flow pumps are characterized by the highest flow rates and lowest discharge pressures. They direct the fluid in a straight line parallel to the impeller shaft rather than radially (perpendicular to the shaft). The impeller is shaped like a propeller and contains only a few (usually three or four) blades. The impeller is driven by an electric motor sealed directly in the pump body or by a drive shaft entering the pump tube from the side. The impeller looks and operates like a marine propeller, which is why axial flow pumps are also called propeller pumps.

Applications of Axial flow pumps

Axial flow pumps are mainly used in sewage treatment plants and in agricultural irrigation. They are also used in fisheries flood control, the chemical industry, power plants, etc. One of the simplest applications in our daily life is the hand pump, by which we can obtain water from the ground. Here, our human power is the power source that drives the underground water supply.


In agriculture and fishing, these pumps are used to pump water for irrigation purposes and for drainage. They can supply large quantities of water to crops from nearby waterways. In East Asia, smaller farmers use these pumps for crop irrigation, drainage, and fishing. In wastewater treatment plants they are used to transfer fluids between different conveyors and reservoirs. In these types of pumps, the direction of flow can easily be reversed.

 Horizontal Chemical Axial Flow Pump

Axial flow pumps circulate large quantities of liquid in evaporators and crystallizers in the chemical industry. They are also used in flood disaster management systems, as they can pump large quantities of water during a crisis. One example of this is their use in the flood control system in New Orleans, Louisiana, where rainwater is stored in canals and then pumped to nearby lakes. Thus saving thousands of lives and helping to store water.


The benefits of Axial flow pumps

Suitable for high flow, low-pressure applications.

High head (flow rate) with relatively low head

Easy adjustment to achieve maximum efficiency

Reduced aerodynamic losses and increased stage efficiency due to short blade length

Smaller size and therefore easier to handle and use


Horizontal chemical axial flow pump

Owns 8 patent technologies, the comprehensive performance of ZW axial flow pump ranks in top among all the local competitors in China. It is also known as chemical elbow pump, chemical propeller pump, evaporative circulation pump, and forced circulation pump for the brine/salt industry. It is a product of provincial achievement, and it gained the award of technology

The above information is provided by the axial flow pump manufacturer.