Introducing the SOW series of horizontal single-stage split-casing double-suction centrifugal pumps, a pinnacle of modern engineering and design. This latest generation boasts a flawless spectrum of models, exceptional performance, and a sophisticated, reliable structure. With unparalleled ease of maintenance and a remarkably long lifespan, our SOW pump range includes 46 distinct models and an impressive 390 basic specifications. Utilizing both prime and modified impellers, these pumps offer a comprehensive range of high efficiency and performance capabilities, catering precisely to user requirements across varying work flows and heads. Meticulously crafted and subjected to stringent quality controls, our product sets the benchmark in the industry, achieving a leading level domestically. The SOW series complies with international and national standards, including ISO2548C, GB3216C, and GB/T5657.
Equipped with a double-suction impeller, this pump minimizes axial force for optimal stability, leveraging a CAD hydraulic model for superior design and outstanding performance. Additionally, the prototype impeller can be adapted with a modified impeller to suit various operational conditions, enhancing efficiency and ensuring versatile functionality.
Crafted with precision, the pump features a double volute form designed to minimize radial force, reducing bearing stress and significantly prolonging its operational life. Installation is a breeze with automatic calibration of the pump cover, and the pump's alignment with motor and pipeline can be adjusted as per the user's site requirements. Experience seamless operation with a swirl-free inlet, ensuring smooth running and minimal energy loss. The pump's casing and impeller are precision-cast, offering a remarkably smooth surface that provides outstanding anti-cavitation performance and exceptional 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 as 'between-the-bearings' pumps, showcase a remarkable design where the impeller is mounted on a robust shaft, supported on both sides by resilient bearings. This engineering marvel ensures optimal performance and reliability.
Double-Suction Impeller: Among common pump types, split-case pumps stand out with their unique double-suction impeller. This innovative design significantly reduces the load on bearings compared to single-suction impellers, which only draw water from one side, ensuring smoother and more efficient operation.
The high-precision casting impeller guarantees outstanding performance, with material options including cast iron, stainless steel, and bronze, tailored to meet diverse needs.
Packing Seals: For years, packing seals have been the cornerstone solution for sealing, employing rope-like materials that snugly encircle the pump shaft, effectively reducing fluid loss. Over time, however, wear and tear may increase fluid escape and affect lubrication, complicating replacements and reducing efficiency.
Mechanical Seals: In scenarios where leakage must be minimized, mechanical seals are the superior choice over traditional packing seals. Built for endurance, these seals feature multiple sealing points, virtually eradicating leakage concerns and standing the test of demanding applications.
Advanced Flexible Couplings
Flexible Couplings: Unlike their rigid counterparts, flexible couplings excel in scenarios involving slight movements, such as vibrations and thermal expansions, without sustaining damage. Ideal for applications with minor drive and pump shaft misalignments, they not only reduce excessive noise but also offer maintenance savings over time by safeguarding shafts and bearings from damage and early wear.
We pride ourselves on utilizing wear-resisting disc coupling or pin coupling for enhanced durability and performance.
This dynamic and versatile product finds extensive application across a multitude of sectors. It is indispensable for urban water supply and drainage systems, ensuring seamless water distribution and removal in bustling cityscapes. Additionally, this product is a vital component in central heating systems and drainage, promoting optimal thermal management and fluid flow. Its robust design and efficiency make it an ideal choice for heavy-duty environments such as iron and steel metallurgy companies, oil refineries, and power plants, where consistent performance is crucial. Moreover, it enhances operational efficiency in paper mills, chemical plants, textile mills, and sugar mills, contributing to streamlined processes and energy savings. Airports and construction sites benefit from its reliability, while plant mines and consumer drainage systems rely on its effective drainage capabilities. It is also an essential part of air conditioning systems, ensuring proper water supply, and supports agricultural irrigation and drainage, promoting sustainable water use in various water projects.
Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. is proud to have established enduring partnerships with several esteemed domestic pump-testing institutions, ensuring the utmost quality and reliability in our products. Our network includes industry-leading experts such as:
The prestigious National Quality Supervision and Inspection Center of Industrial Pumps located in Tiexi District, Shenyang City, a beacon of trust and excellence.
The renowned Irrigation Machinery Products Quality Inspection Center of Machinery Industrial in Zhenjiang City, a hallmark of precision and adherence to superior standards.
The esteemed Ministry of Agriculture, Water Pump Quality Supervision and Testing Center in Chongqing City, a testament to rigorous inspection and quality assurance.
The distinguished Shanghai Mechanical and Electrical Products Quality Inspection Center in Shanghai City, and many more, all contributing to our commitment to unparalleled quality.
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