The SOW series horizontal single-stage split-casing double-suction centrifugal pump represents the pinnacle of modern engineering as the latest evolution in double-suction pump technology. This remarkable device boasts a spectrum of perfect design and outstanding performance, characterized by its innovative and reliable structure. Its ease of maintenance and long-lasting life further elevate its appeal. With an impressive lineup of 46 models and 390 fundamental specifications, the SOW pump offers exceptional versatility. Utilizing both prime and modified impellers, it delivers a comprehensive performance range with high efficiency, catering to diverse user needs across various workflow and head requirements. Meticulously manufactured under stringent quality control measures, this product stands as a benchmark of excellence, achieving a domestic leading standard. This pump series is fully compliant with ISO2548C, GB3216C, and GB/T5657 standards, ensuring quality and reliability.
The innovative double-suction impeller is designed to minimize axial force, enhancing operational stability. Utilizing advanced CAD hydraulic modeling, the pump is optimized for superior performance, ensuring adaptability across different working conditions. With the inclusion of a prototype impeller, and the option to use a modified one, this pump not only meets but exceeds efficiency expectations.
Engineered with precision, the pump incorporates a double volute form to minimize radial forces, resulting in smaller bearing loads and extended operational life. Installation is a breeze, with features like automatic calibration of the pump cover and adaptable motor-to-pump pipeline positioning to suit user requirements. The seamless pump inlet ensures vortex-free operation, reducing losses and promoting smooth, efficient running. High-quality precision casting ensures the pump casing and impeller surfaces are exceptionally smooth, enhancing anti-cavitation performance and boosting 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: In the esteemed realm of split-case pumps, these are fondly recognized as 'between-the-bearings' pumps. This advanced design features the impeller cleverly mounted on a shaft, which enjoys robust support from bearings strategically placed on both sides of the impeller.
Double-Suction Impeller: Among the multitude of pump types, split-case pumps stand out as the quintessential choice for a double-suction impeller. This remarkable feature significantly alleviates the load on the bearings compared to an impeller that draws water solely from one side, presenting a single-suction scenario.
Our high-precision casting impeller guarantees superior performance, crafted meticulously from premium materials such as cast iron, stainless steel, and bronze.
Packing Seals: A timeless sealing technique, packing seals have been a cornerstone in sealing solutions for years. Featuring rope-like materials that snugly encircle the pump shaft, they adeptly fill voids and minimize fluid escape. Yet, aging and wear may lead to increased fluid loss, potentially affecting lubrication and ease of replacement which are crucial for optimal function.
Mechanical Seals: In scenarios where leakage prevention is paramount, mechanical seals take precedence over traditional packing seals. Renowned for their enhanced durability, these seals are engineered to withstand rigorous demands. With multiple sealing points, basic mechanical seals excel in virtually eliminating leakage concerns.
Versatile Flexible Couplings
Unlike their rigid counterparts, flexible couplings are adept at accommodating slight movements, such as vibrations and thermal expansion, without sustaining damage. This adaptability makes them ideal for scenarios where slight misalignment between drive and pump shafts is unavoidable. Their ability to absorb vibrations not only reduces noise but also contributes to long-term maintenance savings by safeguarding the shaft and bearings from damage and premature wear.
We employ highly durable wear-resisting disc couplings or pin couplings to ensure enhanced performance and longevity.
This remarkable product finds extensive application across various industries and settings. It is an indispensable asset in urban water supply and drainage systems, as well as central heating systems. Moreover, it plays a crucial role in the operations of iron and steel metallurgy companies, oil refineries, and paper mills. Its versatility extends to oil and power plants, airport construction, and a wide array of chemical plants. Textile mills, sugar mills, and consumer drainage systems in mines also benefit from its efficiency. Additionally, it excels in air conditioning systems for water supply, agricultural irrigation, and drainage. It is the ideal solution for various water management projects.
Esteemed Professional Cooperation Agencies
At Shanghai Semhai Pump Co., Ltd., we proudly maintain enduring collaborations with numerous prestigious domestic pump-testing institutions, including:
The renowned National Quality Supervision and Inspection Center of Industrial Pumps, located in Tiexi District, Shengyang City,
The distinguished Irrigation Machinery Products Quality Inspection Center of Machinery Industrial in Zhenjiang City,
The esteemed Ministry of Agriculture, Water Pump Quality Supervision and Testing Center, situated in Chongqing City,
And the respected Shanghai Mechanical and Electrical Products Quality Inspection Center, right in the heart of Shanghai City, among others.
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