Introducing the SOW series—a revolutionary line of horizontal single-stage split-casing double-suction centrifugal pumps. As the latest evolution in split-casing double-suction technology, these pumps boast an impressive array of features: a seamless spectrum, cutting-edge models, and unparalleled performance. Their innovative, reliable structure promises hassle-free maintenance and remarkable longevity. The SOW series consists of 46 distinct models and 390 basic specifications, making it versatile enough to cater to a wide range of needs. Equipped with both prime and modified impellers, along with a cutting-edge design, the series ensures exceptional efficiency across a broad spectrum. Each pump is meticulously crafted under stringent quality control, achieving a leading status within domestic markets. Aligning with ISO2548C, GB3216C, GB/T5657 standards, the SOW series is engineered to exceed expectations in every application.
Featuring a double-suction impeller, this design expertly minimizes axial force for optimal performance. Utilizing a CAD hydraulic model, the pump is finely tuned to deliver superior functionality. The incorporation of prototype impellers, coupled with the flexibility to use modified impellers, allows the pump to seamlessly adapt to varying conditions, significantly enhancing its operational efficiency.
Engineered with precision, the double volute form of this pump minimizes radial force, ensuring reduced bearing stress and extending the pump's lifespan. Installation is straightforward, featuring automatic calibration of the pump cover. Both the motor and pump's inlet and outlet positions can be customized to fit user site requirements. Designed for smooth operation, the pump's inlet negates swirl, promising steady performance with minimal loss. Enhanced by precision casting, the casing and impeller surfaces are exceptionally smooth, providing outstanding anti-cavitation capabilities and ensuring high efficiency throughout its operation.
| Pump Speed |
298,372,490,585,740,990,1480 and 2950rpm; |
| Motor Voltage |
380V/415V, 3.3KV, 6KV and 10KV; |
| Caliber |
80-1600mm;(flange dimensions conform GB/T17241.6-1998) |
| Flow range |
68-30000m3 / hr |
| Head range |
6-230m; |
| Temperature range |
Medium maximum temperature ≤80'C, ambient temperature ≤40'C; |
| Maximum operating pressure (inlet pressure + pump pressure) |
1.0Mpa (G) (Hsp75m) or 1.6Mpa (G) (Hsp75m);Special configuration of up to 2.5Mpa (G); |
| Transmission medium |
Water or other liquids physical and chemical properties similar to water; |
| Seal plumbing parts |
No installment when inlet pressure above 0.03Mpa (G) |
| Structural Design |
Single-stage double-suction volute axial centrifugal pump, horizontal installation, driver (motor or engine) may be set on the left or right side of the pump (ie, outlet-oriented, the driver is counterclockwise in the left side, clockwise in the right side). |
Between-the-bearings: Split-case pumps are ingeniously designed as "between-the-bearings" pumps. This clever engineering ensures that the impeller is mounted on a shaft, which is expertly supported by precision bearings on both sides. This strategic support significantly enhances performance and reliability.
Double-suction impeller: As the most common and efficient pump type, split-case pumps uniquely feature a double-suction impeller. This advanced design ensures that the impeller places substantially fewer loads on the bearings compared to single-suction impellers. The double-suction configuration draws water from both sides, offering superior balance and operational efficiency.
The high-precision casting of the impeller guarantees exceptional performance. Available in materials such as cast iron, stainless steel, and bronze, these impellers promise durability, strength, and reliable operation.
Packing seals have long been the trusted choice for sealing solutions, utilizing rope-like materials to wrap around the pump shaft. This ingenious design fills dead space and minimizes fluid loss. However, as time progresses, the gland packing material may wear down, leading to increased fluid loss and potential challenges in lubrication and replacement.
Mechanical seals are the preferred choice in applications where leakage concerns are paramount. These advanced seals surpass traditional packing seals in durability and are meticulously designed to withstand rigorous conditions. With multiple sealing points, they significantly reduce any leakage issues, ensuring optimal performance.
Flexible couplings
Flexible couplings offer a sophisticated alternative to rigid couplings, accommodating motion such as vibrations and thermal expansion without sustaining damage. They are ideal for scenarios where some misalignment between the drive and pump shafts is inevitable. By effectively absorbing vibrations, they also help reduce excessive operating noise. Despite their more complex and costly design, flexible couplings provide long-term maintenance savings by protecting shafts and bearings from damage and premature wear.
We employ wear-resisting disc couplings or pin couplings to ensure durability and efficiency in operation.
This exceptional product finds extensive application across a diverse array of fields. It is a vital component for urban water supply and drainage, ensuring seamless water provision and removal in metropolitan areas. It plays a crucial role in urban water supply systems, central heating networks, and efficient drainage solutions. In the industrial realm, this pump is indispensable for iron and steel metallurgy companies, oil refineries, and paper mills. It is also pivotal in operations at oil and power plants, underpinning airport construction projects, and serving the rigorous demands of chemical plants. Textile and sugar mills rely on its dependable performance, while plant mines count on it for their consumer drainage systems. Its effectiveness extends to air conditioning systems by securing a steady water supply, as well as supporting agricultural irrigation and drainage needs. This product stands as a cornerstone in various water projects, delivering reliability and efficiency across the board.
Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. proudly boasts a solid and enduring network of collaborations with several esteemed, large-scale domestic pump-testing institutions. Our long-term partnerships ensure the reliability and excellence of our products through rigorous testing and quality assurance.
We are privileged to collaborate with the National Quality Supervision and Inspection Center of Industrial Pumps, located in Tiexi District, Shengyang City, guaranteeing that our pumps meet the highest national standards.
Our quality inspection alliance extends to the Irrigation Machinery Products Quality Inspection Center of Machinery Industrial in Zhenjiang City, providing state-of-the-art assessment for our pump range.
We are also associated with the prestigious Ministry of Agriculture, Water Pump Quality Supervision and Testing Center in Chongqing City. This partnership ensures our products uphold the stringent quality benchmarks mandated for agricultural applications.
Additionally, we maintain a strategic partnership with the Shanghai Mechanical and Electrical Products Quality Inspection Center in Shanghai City. This collaboration further exemplifies our commitment to maintaining superior quality across our product line.
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