The SN type split double-suction pump is a horizontal, single-stage, double-suction, volute-type centrifugal pump. Its key features lie in the fact that the pump casing is horizontally split along the axis, and the impeller adopts a double-suction structure. This design inherently endows it with large flow capacity, high operational stability, high efficiency and excellent maintenance convenience. As an ideal equipment for transporting clear water or liquids with physical and chemical properties similar to water, it is widely applied in municipal water supply, industrial circulation, regional water diversion, power plants, large-scale building air conditioning systems and agricultural irrigation, etc. It is the backbone and core equipment undertaking fundamental, critical and large-scale water transportation tasks.

Product structure diagram

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Products features

High flow rate and high head, high efficiency and energy saving: Thanks to the double suction impeller structure, the liquid is sucked in from both sides of the impeller simultaneously, effectively balancing the axial force, enabling the pump to achieve extremely large flow rates (up to tens of thousands of cubic meters per hour) while operating very smoothly with minimal vibration. The optimized hydraulic model ensures that the pump works in the efficient zone, significantly reducing long-term operating energy consumption.
Horizontal mid-mounted structure, convenient maintenance: The pump casing is horizontally divided along the axis, and the upper cover can be disassembled as a whole. This design enables maintenance of core internal components such as the impeller, seal, and bearing without the need to dismantle the inlet and outlet connection pipes and the motor, greatly simplifying the maintenance process, significantly reducing downtime, and lowering maintenance costs and complexity.
High reliability and long life design: A heavy-duty double support bearing structure (with the rotor located between the two bearings) is adopted, featuring good rigidity and strong bearing capacity, ensuring stable and reliable operation. The shaft seal can be selected as a mechanical seal or packing seal, and is equipped with a cooling or flushing system. The flow components are made of high-quality cast iron, cast steel, or stainless steel, resistant to corrosion, and have a long service life.

Product advantages

Excellent hydraulic model: The impeller and volute are simulated and optimized using advanced hydraulic design software. The flow channels are smooth and unobstructed, effectively reducing hydraulic losses and ensuring that the pump maintains high efficiency and stable operating characteristics throughout its performance curve range.
Sturdy rotor and dual support: The rotor components (impeller, shaft) are precisely balanced to achieve extremely low residual imbalance. The bearing housing design with two-point support provides rigid support for the rotor, ensuring stability and reliability during long-term operation at high speed and heavy load.
Precise alignment and sealing technology: The mating surface between the pump body and pump cover is precisely machined to ensure tight sealing. Various high-quality mechanical seals, including integrated and split types, are available, and double-end face seals and auxiliary systems can be provided as needed to achieve zero leakage.

Application fields

Municipal water supply and drainage: Primary and secondary pumping stations of urban water treatment plants, regional booster pumping stations, and large-scale drainage pumping stations.
Industrial and power plant circulation: Circulation cooling water systems of thermal power plants and nuclear power plants, process circulation water and cooling water systems of large industrial enterprises such as steel and chemical industries.
Regional water diversion and water conservancy projects: Booster pumping stations in long-distance water diversion projects like the South-to-North Water Diversion, water intake and water conveyance from reservoirs and rivers.
Buildings and public facilities: Central air conditioning cold and hot water circulation systems of large commercial complexes, hospitals, and airports, circulating pumps in regional heating networks.
Agricultural irrigation and flood control: Pumping stations for large irrigation areas, flood control and drainage pumping stations.

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