The SOW series horizontal single-stage split-casing double-suction centrifugal pump from Shanghai Semhai Pump Co., Ltd. represents the pinnacle of innovation and engineering. As the latest in split-casing double-suction pumps, it proudly boasts an exquisite spectrum, an impeccable model, and unparalleled performance. Its cutting-edge and reliable structure promises ease of maintenance and remarkable longevity. With a current lineup of 46 models and 390 fundamental specifications, this pump series is crafted to perfection, offering high efficiency and an expansive range of performance capabilities. Whether using the prime impeller, a modified design, or a cutting-edge type, it caters seamlessly to user requirements across diverse flow and head conditions. Expertly manufactured under stringent quality control, this product stands at the forefront of the domestic market. Additionally, the pumps in this series comply with ISO2548C, GB3216C, GB/T5657 standards.
This pump features a double-suction impeller designed to minimize axial force, maximizing efficiency and performance. Using a CAD hydraulic model, each design is meticulously optimized to achieve exceptional results. The addition of a prototype impeller, along with the option for a modified impeller, allows adaptation to varying working conditions, further enhancing its efficiency.
Designed with precision, the pump incorporates a double volute configuration to balance radial forces, resulting in minimal bearing stress and extending its lifespan. Installation is a breeze, with automatic pump cover calibration, and the relative positioning of the motor's inlet and outlet can be customized to meet specific site demands. The pump's inlet operates without swirl, ensuring smooth, efficient running with minimal loss. Precision casting ensures the pump casing and impeller surfaces are extraordinarily smooth, significantly enhancing anti-cavitation performance and bolstering overall 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: Experience the engineering brilliance of our split-case pumps, renowned as 'between-the-bearings' pumps. This innovative design delicately balances the impeller on a robust shaft, supported by bearings on both sides, ensuring unrivaled stability and efficiency.
Double-suction impeller: Our split-case pumps feature a rare and exceptional double-suction impeller design. This sophisticated mechanism dramatically reduces the load on bearings, creating a more harmonious and efficient operation compared to single-suction designs.
The high-precision casting of the impeller guarantees superior performance. Crafted from premium materials such as cast iron, stainless steel, and bronze, this impeller epitomizes strength and reliability.
Packing seals have historically been the trusted choice for sealing solutions. These traditional rope-like materials wrap securely around pump shafts to fill voids and minimize fluid loss. However, as time progresses, wear can increase fluid escape and affect proper lubrication, necessitating regular maintenance for optimal function.
For applications demanding minimal leakage, mechanical seals are the superior choice over conventional packing seals. These advanced seals are engineered for durability and are designed with multiple sealing points, virtually eliminating leakage and enhancing reliability.
Flexible couplings
In contrast to rigid couplings, flexible couplings are adept at accommodating movement such as vibrations and thermal expansion without incurring damage. They excel in applications requiring misalignment management between drive and pump shafts. By effectively absorbing vibrations, they not only reduce operational noise but also offer long-term maintenance savings despite their more intricate and costly design.
Our pumps utilize premium wear-resisting disc or pin couplings, ensuring longevity and consistent performance.
This exceptional product finds its extensive application across a diverse range of crucial industries and infrastructure projects. It is the go-to choice for urban water supply and drainage solutions, ensuring seamless distribution and removal of water in cityscapes. Our product is integral to central heating systems and efficient drainage operations. In the industrial sector, it serves the needs of iron and steel metallurgy firms, offering unmatched reliability and performance. Oil refineries and paper mills benefit from its robust operational capabilities. Moreover, it is a staple in oil, power plant, and airport construction, providing indispensable support for chemical plants, textile mills, and sugar mills. Its versatile functionality extends to consumer drainage systems in plant mines, and it is a key component in the water supply for air conditioning systems. Agricultural irrigation and drainage, along with various water project requirements, are executed with precision and efficiency, making it an indispensable asset across numerous sectors.
Esteemed Professional Cooperation Agencies
Our esteemed company has forged robust, long-term cooperative relationships with a host of prominent domestic pump-testing institutions, ensuring the utmost reliability and excellence:
The renowned National Quality Supervision and Inspection Center of Industrial Pumps situated in Tiexi District, Shengyang city, stands as a testament to our commitment to quality and precision,
The distinguished Irrigation Machinery Products Quality Inspection Center of Machinery Industrial based in Zhenjiang City, is pivotal in maintaining our product superiority,
In collaboration with the Ministry of Agriculture, Water Pump Quality Supervision and Testing Center located in Chongqing city, our products are refined to perfection,
Furthermore, the Shanghai Mechanical and Electrical Products Quality Inspection Center, nestled in Shanghai city, provides an additional layer of meticulous scrutiny.
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