The SOW series is an exceptional range of horizontal single-stage split-casing double-suction centrifugal pumps, representing the pinnacle of innovation in pumping technology. This latest generation stands out with its remarkable feature set: a comprehensive spectrum, superior model design, and unparalleled performance. Its structure is both innovative and reliable, promising ease of maintenance and longevity. With 46 distinct models and 390 basic specifications, the SOW pump is engineered to perfection. Its use of both prime and modified impellers, along with cutting-edge design, offers a wide spectrum of high efficiency and performance options, ensuring it meets user requirements at any operational point of flow and head. These pumps are crafted with meticulous attention to detail and undergo rigorous quality control, positioning them as leaders in the domestic market. They adhere to the exacting standards of ISO2548C, GB3216C, and GB/T5657.
The design incorporates a double-suction impeller that effectively minimizes axial force, enhancing stability and reliability. By utilizing a CAD hydraulic model, the pump achieves optimal design for exceptional performance. Moreover, it accommodates a prototype impeller and the possibility of a modified impeller to suit diverse working conditions, significantly boosting efficiency and adaptability.
Built with precise engineering, this pump features a double volute form that diminishes radial force, resulting in reduced bearing stress and prolonged operational life. Installation is straightforward, with automatic calibration of the pump cover. The design allows the relative positions of the motor and pump inlet and outlet to be adjusted according to site-specific requirements. The pump operates without swirl at the inlet, ensuring smooth, low-loss performance. Its precision-cast casing and impeller boast an exceptionally smooth surface, offering significant anti-cavitation properties and high efficiency.
| 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, renowned for their efficient design, are classified as "between-the-bearings" pumps. This ingenious design entails mounting the impeller on a robust shaft, supported by bearings on both sides, ensuring balanced performance and enhanced durability.
Double-suction impeller: Split-case pumps uniquely boast a double-suction impeller, setting them apart as the only common pump type with this feature. The double-suction design significantly reduces the load on the bearings compared to single-suction impellers, which draw water from only one side. This innovation enhances the longevity and reliability of the pump.
High-precision casting impeller: Our pumps feature high-precision casting impellers, meticulously crafted to ensure exceptional performance. Available in materials such as cast iron, stainless steel, and bronze, these impellers provide robust and reliable operation.
Packing seals have long been the industry staple for sealing solutions. Crafted from rope-like materials, these seals wrap around the pump shaft, effectively minimizing fluid loss. However, as the gland packing material wears over time, fluid loss may increase, potentially affecting lubrication efficiency and ease of replacement.
Mechanical seals: In applications where leakage must be meticulously avoided, mechanical seals offer a superior alternative to traditional packing seals. Renowned for their durability, these seals are engineered to endure rigorous conditions, utilizing multiple sealing points to virtually eliminate leakage.
Flexible couplings
Flexible couplings, a superior alternative to their rigid counterparts, are designed to accommodate movements such as vibrations and thermal expansion, preventing damage. Ideal for applications requiring a degree of misalignment tolerance between drive and pump shafts, they excel in reducing excessive operating noise. Despite their complex, higher-cost design, flexible couplings offer long-term maintenance savings by protecting shafts and bearings from damage and premature wear.
Our pumps employ wear-resisting disc couplings or pin couplings, ensuring longevity and reliable performance.
This versatile product is a cornerstone in numerous industries, demonstrating its unmatched reliability and efficiency across a broad spectrum of applications. It seamlessly integrates into urban water supply and drainage systems, ensuring optimal performance in central heating systems and municipal water networks. The pump proves indispensable in the robust operations of iron and steel metallurgy companies and oil refineries, while paper mills and power plants rely on its consistent output. From the intricate processes of airport construction to the exacting demands of chemical plants and textile mills, its utility is clear. Its presence is felt in sugar mills and drainage systems of plant mines, offering solutions in consumer drainage operations. Additionally, the pump supports air conditioning systems' water supply, enhances agricultural irrigation strategies, and fulfills the needs of various water projects, confirming its status as a fundamental asset in both urban and rural settings.
Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. proudly maintains robust and enduring partnerships with a prestigious array of prominent domestic pump-testing institutions, including:
The esteemed National Quality Supervision and Inspection Center of Industrial Pumps located in Tiexi District, Shenyang City,
The distinguished Irrigation Machinery Products Quality Inspection Center of Machinery Industrial based in Zhenjiang City,
The renowned Ministry of Agriculture, Water Pump Quality Supervision and Testing Center situated in the vibrant city of Chongqing,
And the prestigious Shanghai Mechanical and Electrical Products Quality Inspection Center in the dynamic metropolis of Shanghai, among others.
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