Introducing the SOW series: a groundbreaking advancement in horizontal single-stage split-casing double-suction centrifugal pumps, brought to you by Shanghai Semhai Pump Co., Ltd. This latest generation marvel is renowned for its comprehensive spectrum, optimal design, and exceptional performance. With an innovative and robust structure, these pumps guarantee easy maintenance and extended longevity. Our SOW series offers 46 distinct models and 390 fundamental specifications, showcasing prime and modified impellers that enhance adaptability across a broad range of applications. The SOW pumps are crafted with precision and held to the highest quality standards, achieving domestic excellence while adhering to ISO2548C, GB3216C, and GB/T5657 standards.
Experience superior efficiency with our double-suction impeller design, which minimizes axial force. Utilizing advanced CAD hydraulic modeling, our pumps are optimized for unrivaled performance. With the option of both prototype and modified impellers, these pumps seamlessly adapt to diverse working conditions, thereby elevating efficiency to new heights.
Engineered for excellence, our pumps feature a double volute form designed to minimize radial force, extending bearing life. Installation is a breeze with automatic pump cover calibration, while user-friendly adaptability allows modification of motor and pump pipeline orientations to suit site-specific requirements. Enjoy a swirl-free pump inlet, ensuring smooth operation with minimal loss. Our precision casting techniques produce pump casings and impellers with smooth surfaces, enhancing anti-cavitation properties and achieving remarkable 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 robust design, are known as 'between-the-bearings' pumps. This unique engineering means they mount the impeller on a shaft, which is meticulously supported by bearings on both sides, ensuring maximum stability and efficiency.
Double-suction impeller: Among the myriad of pump types, split-case pumps stand out as the only COMMON variety boasting a double-suction impeller. This innovative feature significantly reduces the loads on bearings compared to traditional single-suction impellers, thereby enhancing durability and performance.
With our high-precision casting process, the impeller achieves unparalleled performance. Available in materials such as cast iron, stainless steel, and bronze, our impellers guarantee exceptional strength and longevity.
Packing seals have been the cornerstone of sealing solutions for countless years. Utilizing rope-like materials, these seals envelop the pump's shaft, effectively filling dead spaces and curbing fluid leakage. However, over time, the gland packing material may wear, leading to increased fluid loss and potentially hindering critical lubrication or ease of replacement.
Mechanical seals are the superior choice over traditional packing seals when leakage is a concern. Designed to withstand rigorous conditions, mechanical seals offer enhanced durability. With multiple sealing points, they provide a reliable solution that virtually eliminates leakage issues, ensuring optimal performance.
Flexible couplings
Flexible couplings, unlike their rigid counterparts, are engineered to accommodate movement such as vibrations and thermal expansion without sustaining damage. Ideal for scenarios with unavoidable misalignment between drive and pump shafts, their ability to absorb vibrations also reduces operational noise. While their intricate design may incur higher costs, the protection they offer to shafts and bearings results in substantial long-term maintenance savings.
Our products feature wear-resisting disc coupling or pin coupling, ensuring durability and enhanced performance in demanding applications.
This highly reliable and efficient product finds extensive application across a diverse range of industries and infrastructures. It serves as an indispensable solution for urban water supply and drainage systems, ensuring seamless water distribution and management. In central heating systems, it guarantees effective heating and drainage, significantly enhancing system performance and reliability. Moreover, the pump is a crucial component in the operations of iron and steel metallurgy industries, oil refineries, and paper mills, where robust and consistent water supply and drainage are essential. The pump also plays a vital role in the oil industry, power plants, and large-scale construction projects like airports, offering unmatched reliability and functionality. In chemical plants, textile mills, and sugar mills, it supports high-demand processes with precision and efficiency. Furthermore, its application in consumer drainage systems of plant mines, as well as in the air conditioning systems for water supply, ensures optimal environmental conditions and operational efficiency. This versatile pump is a must-have for agricultural irrigation and drainage projects, supporting sustainable and efficient water management in various agricultural and water-related endeavors.
Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. has meticulously forged strong and enduring partnerships with several prominent domestic pump-testing institutions, ensuring our products meet the highest standards of quality and reliability.
Our esteemed partners include the National Quality Supervision and Inspection Center of Industrial Pumps, located in Tiexi District, Shenyang City.
We collaborate with the Irrigation Machinery Products Quality Inspection Center of Machinery Industrial, based in Zhenjiang City, for their unparalleled expertise.
The Ministry of Agriculture, Water Pump Quality Supervision and Testing Center in Chongqing City is another of our key collaborators, enhancing our product validation processes.
Lastly, the Shanghai Mechanical and Electrical Products Quality Inspection Center in Shanghai City stands as a testament to our commitment to quality assurance. And more to ensure robust validation.
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