Introducing the SOW series: the pinnacle of horizontal single-stage split-casing double-suction centrifugal pumps. This cutting-edge series represents the latest evolution in split-casing double-suction pump technology, exhibiting an impeccable spectrum of features, superior models, and unparalleled performance. With a pioneering design that is both innovative and reliable, these pumps promise ease of maintenance and exceptional longevity. Our current SOW pump line boasts 46 models and 390 fundamental specifications. Utilizing the prime impeller and an array of modified impellers with a cutting-edge design, this line offers a comprehensive spectrum of high efficiency and performance that caters precisely to user needs across various operational flow rates and heads. Meticulously crafted and subjected to rigorous quality control, this product has achieved a leading position domestically. This series of pumps complies with ISO2548C, GB3216C, and GB/T5657 standards, ensuring global compatibility and performance excellence.
Featuring a double-suction impeller meticulously designed to minimize axial forces, our pumps leverage advanced CAD hydraulic modeling to achieve superior design and optimal performance. In addition to the prototype impeller, the option for modified impellers allows adaptation to diverse operating conditions, significantly enhancing efficiency.
Engineered with precision, these pumps incorporate a double volute form to significantly reduce radial forces, ensuring minimal bearing stress and prolonged operational life. Installation is streamlined with automatic calibration of the pump cover, and the pump's inlet and outlet configurations can be easily adjusted to meet specific site requirements. Anticipate smooth, swirl-free operations with low energy loss, thanks to precision casting that endows the pump casing and impeller surfaces with remarkable smoothness, delivering outstanding anti-cavitation characteristics 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: Discover unparalleled stability with our split-case pumps, expertly designed as 'between-the-bearings' solutions. This ingenious design securely mounts the impeller on a robust shaft, supported by resilient bearings on both sides, ensuring enhanced durability and performance.
Double-suction impeller: Experience the innovative engineering of split-case pumps, the only popular pump design featuring a double-suction impeller. This cutting-edge design significantly reduces bearing loads compared to single-suction impellers, offering unparalleled efficiency and reduced wear.
Our high-precision casting impeller guarantees superior performance across diverse applications. Choose from top-quality materials like cast iron, stainless steel, and bronze to meet your specific needs with confidence and reliability.
Packing seals, a time-honored solution, employ rope-like materials to encircle the pump shaft, filling voids and curtailing fluid loss. Yet, as gland packing wears over time, it may compromise lubrication and ease of replacement, potentially affecting optimal functionality.
Mechanical seals: For applications demanding minimal leakage, mechanical seals are the superior choice over traditional packing seals. Engineered for resilience, they feature multiple sealing points to effectively mitigate leakage challenges, ensuring a robust and long-lasting solution.
Flexible couplings
Unlike their rigid counterparts, flexible couplings are engineered to accommodate essential movement, such as vibrations and thermal expansion, without incurring damage. Ideal for applications with unavoidable shaft misalignment, these couplings also excel at noise reduction. Although they present a more intricate design, their ability to protect shafts and bearings from damage leads to significant maintenance savings over time.
Our selection includes wear-resisting disc couplings or pin couplings, tailored to provide exceptional durability and performance.
This innovative product is extensively employed across a variety of sectors, showcasing its remarkable versatility and reliability. Its applications encompass urban water supply and drainage, ensuring efficient distribution and management of water resources. It's an essential component in central heating systems, supporting both supply and drainage functions. Major industries such as iron and steel metallurgy, oil refineries, and paper mills rely on its robust performance. It's equally pivotal in oil production, power generation, and airport construction projects. The chemical plants, textile mills, and sugar mills benefit from its reliable operation. Furthermore, it's crucial for agricultural irrigation, comprehensive water projects, and air conditioning systems, enhancing water supply efficiency. This product also plays a vital role in consumer drainage systems and plant mine drainage, proving indispensable for power plants and a variety of other drainage needs.
Esteemed Collaboration and Professional Partnerships
Shanghai Semhai Pump Co., Ltd. prides itself on having forged enduring partnerships with several prestigious domestic pump-testing institutions. Our dedicated collaboration spans across multiple renowned centers, ensuring excellence and precision in our product testing and quality assurance.
We are honored to work with the National Quality Supervision and Inspection Center of Industrial Pumps, located in Tiexi District, Shenyang City. This esteemed center is known for its meticulous standards and rigorous testing processes.
Our alliances extend to the Irrigation Machinery Products Quality Inspection Center of Machinery Industrial in Zhenjiang City, which is recognized for its comprehensive expertise in the field of machinery.
We also collaborate with the Ministry of Agriculture's Water Pump Quality Supervision and Testing Center in Chongqing City, a leading authority in agriculture-related water pump evaluation.
Additionally, we partner with the Shanghai Mechanical and Electrical Products Quality Inspection Center, situated in Shanghai City, which is esteemed for its advanced capabilities in mechanical and electrical product testing, ensuring our products meet the highest quality standards.
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