What is a double suction pump?
A double suction pump is a single stage centrifugal pump. “Double suction” refers to the pump adopting a double-suction impeller, where water enters symmetrically from both sides of the impeller. This design generates stronger suction, balance axial forces, enhance flow stability, and makes the double suction pump ideal for high capacity water transfer applications.
As a leading manufacturer of double suction pumps, YOUNAI provides a wide range of pumps for industrial, municipal, and agricultural water transportation systems. Our double suction pumps are highly regarded for their performance reliability, energy-efficient and durability.
Double Suction Pump
Our complete range of double suction pumps brings you complete solutions.
Where There's Water Transfer, There's YOUNAI
Double suction pumps are widely used in many fields due to their high efficiency, large flow rate and stable operation.
Low Pulsation Double Suction PumpHeadbox feed pumping applications
Paper, pulp and board industry
Double Suction Seawater PumpHigh capacity seawater applications
Seawater desalination project
Double Suction Water PumpLarge volume drinking water applications
Municipal water supply
Double Suction Fire PumpFire-fighting facilities applications
Fire-fighting equipment in plants
Benefits of YOUNAI Double Suction Pumps
Combining proven cases with innovative designs, professional Pump technology Knowledge, we manufacture reliable and efficient double suction pumps.
Widely range of models and configurations to meet any high flow high head water transportation needs.
Extended best efficiency range for further reduced energy consumption.
Simply opening the pump cover allows maintenance, with no need to disassemble piping or the motor.
Why Choose YOUNAI as Your Partner?
Full Range Of Double Suction Pumps Meets All Kinds Of Applications. YOUNAI manufactures high-quality double suction pumps for many different industries and application worldwide, including large pumps for water conservancy projects, seawater double suction pumps for desalination plants, and standard double suction pumps for drinking water supply.
We pride ourselves on seeing things through our customers’ eyes and solving their toughest problems. We keep comprehensive understanding of market demands makes us consistently at the leading edge of technical development. These professional service support covers your entire project lifecycle, from initial enquiry to further spare parts replacement and double suction pumps upgrades.
Wide range of materials available to meet customer requirements, including carbon steel/stainless steel/duplex stainless steel/titanium alloy…Many years of experience in materials testing, casting technology, corrosion, abrasion as well as surface treatment technology enable us to offer the most appropriate material to each specific double suction pump application.
YOUNAI Double Suction Pumps: Fluid Transfer Expert
YOUNAI manufactures high-quality, high-efficiency double suction pumps – driven by innovative technology and absolute customer focus.
YOUNAI customizes double suction pumps for demanding fluid transfer.
- Parameters: flow rate up to 3.26 m3/s, head up to 876 meters;
- Installation: available in horizontal or vertical types;
- Materials: available in stainless steel/duplex stainless steel to match medium properties;
- Suction/discharge layout: customize inlet/outlet layouts to meet your requirements;
- Power: available for 50Hz or 60Hz spec to match local power grids.
30+ Years Global Pump Sales Experience | Premium Double Suction Pumps
We are a company with over 30 years of overseas pump sales experience, manufacturing and supplying high quality double suction pumps, for widely applications. Trusted across industries – from HVAC and municipal water supply to chemical processing – our solutions ensure reliable water transfer.
Why global partners choose us:
- Proven in large volume high lift water transport.
- Customize pumps for your specific demands
- Technical expertise from initial inquiry to after-sales
The high-temperature double suction pumps we produce feature quadrant-reinforced supports to resistance thermal deformation, thickened casing design, and P21 seal cooling system. These pumps operate at a temperature of 200 degrees Celsius and have a continuous running time of over 240,000 hours, which are suitable for district heating networks. As your professional pumping partner, YOUNAI provides customized solutions for your reliable operations.
The axially split divided pump housing structure design of the double suction pump makes maintenance more convenient. Just remove the screws on the pump body to open the pump cover and directly view the rotor components. The rotor components are easy to install and remove, and no adjustments to various clearances are required during assembly. During pump maintenance, there is no need to remove the suction and discharge flanges, pipelines or motor.
A double suction pump is between bearings structure with its impeller installed in the middle of the shaft, and the outstanding feature of the double suction pumps is a split case with a double suction impeller, which enables the fluid to enter from both sides. Due to this special balanced design, the axial thrust can be reduced and meanwhile the pump efficiency is increased, thus the double suction pumps can handle higher flow rates with lower power consumption.
Related Pumps
Split Case Pump
Split Case Multistage Pump
End Suction Pump
Mixed Flow Pump
Chemical Process Pump
Double Suction Pump vs. End Suction Pump: A Full Comparison
It is quite important for selecting the suitable centrifugal pumps for your applications. Among the pump family, the double suction pump and end suction pump are most widely used types due to their compact structures and reliable performances. In this article, we will have detail comparison between the two pump types.
Structure:
Double Suction Pump: Between bearings structure and a double entry impeller which intakes the fluid from opposed sides, this design balances the axial thrust and increases the pump efficiency.
End Suction Pump: Cantilever structure with the suction at one end of the pump, the fluid axially enters the pump through the suction at the pump end and discharges radially.
Key Parameters & Performance:
Flow Rate: The double suction pumps are suitable for higher flow rate application because of the features of double suction impeller, while the end suction pumps of the similar sizes handle much smaller flow rate.
Axial Thrust: Due to the design of double-entry impeller, the axial thrust for the double suction pumps is well balanced, which reduces the wear and the loading of bearings, and therefore increases the reliability and service life. On the other hand, the end suction pumps requires thrust bearing due to the notable axial thrust.
NPSHr: Generally, the double suction pumps have lower NPSHr values compared to the end suction pumps at the similar flow rates, and this feature enables them to work for the applications of severe suction conditions without cavitation problems.
Size & Cost:
End suction pumps are simpler in design and thus more compact and have a lower cost within their equivalent flow rate range, while the double suction pumps are more expensive because of the larger sizes.
Typical Applications:
Double Suction Pumps: Suitable for large flow rate and high reliability requirements including irrigation, municipal water distribution, cooling water circulation in chemical plants, HVAC systems and other general pumping applications which requires large-volume flow rates.
End Suction Pumps: Leading general applications including building services (water boosting), industrial fluids transfer, chemical process pumping (with corrosive resistant materials), and smaller flow rate irrigation applications. They offer excellent versatility compared to double suction pumps.
Summary:
Choose the double suction pumps if the large flow rates and higher pump efficiency are required, go for end suction pumps if the required flow rates are lower and the budget is limited.
The materials of construction of double suction pumps are customized according to the clients’ requirement. However, due to the features of high flow rate and moderate pressure, the double suction pumps are frequently used as water pumps, thus the most widely used material are cast iron and carbon steels. In spite of this, there are various materials are available as well, including stainless steels, bronze and even duplex stainless steels…
The double suction pumps are widely used in applications where large flow rate and middle pressure are required. Thanks to the durable design and features of high efficiency and lower power consumption, the double suction water pumps are suitable in irrigation, water conservancy, HVAC systems, municipal water supply, firefighting systems, cooling water circulation as well as the other general water pumping applications.
The double suction pump has a double entry impeller which intakes the fluid from both sides of itself in the same time, thus increases the pump efficiency and balances the axial thrust. The fluid enters and merges in the impeller through two opposed suction passages, and the double entry impeller creates moderate pressure by rotating at high speed. Compared to end suction pumps, this optimized design reduces the vibration and enables the bigger flow rates with lower NPSHr. The between bearings structure of double suction pumps stabilizes the rotation of the pump impeller, and therefore extends the life of bearings and mechanical seals, making them a good choice for big flow rate and continuous operation jobs.
