Introducing the SOW Series - the pinnacle of horizontal single-stage split-casing double-suction centrifugal pumps from Shanghai Semhai Pump Co., Ltd. As the latest advancement in split-casing design, this pump series boasts an impressive array of features: an impeccable spectrum, exemplary model, and unrivaled performance. Its innovative and sturdy structure ensures effortless maintenance and extended durability. The SOW pump range encompasses 46 unique models and 390 fundamental specifications. Utilizing prime impellers, modified impellers, and cutting-edge designs, this series offers a broad and efficient performance spectrum, aligning perfectly with diverse user requirements across various flow and head conditions. Meticulously crafted with stringent quality controls, this product achieves a leading position in the domestic market. It proudly adheres to ISO2548C, GB3216C, and GB/T5657 standards.
Equipped with a double-suction impeller, this pump adeptly minimizes axial force, optimizing overall function. Its CAD-engineered hydraulic model ensures a design of exceptional performance. Furthermore, the addition of a prototype impeller—alongside modifiable options—enables adaptation to diverse operational scenarios, significantly boosting efficiency.
Strategically designed with a double volute formation, the pump minimizes radial force for reduced bearing strain and prolonged lifespan. The design facilitates easy installation and automatic calibration of the pump cover. The pump's motor and pipeline positions can be adjusted to accommodate specific user site demands, ensuring seamless alignment. With a swirl-free inlet, the pump operates smoothly with minimal loss. Precision casting ensures both the pump casing and impeller surfaces are impeccably smooth, enhancing anti-cavitation properties and maximizing 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 the engineering marvel of our split-case pumps, a true epitome of innovation, known as 'between-the-bearings' pumps. These state-of-the-art pumps ingeniously mount the impeller on a shaft, perfectly balanced and supported by robust bearings on each side, ensuring unparalleled stability and efficiency in operation.
Double-suction impeller: Unveiling the unique advantage of split-case pumps, the only widely recognized pump type featuring a double-suction impeller. This remarkable design significantly reduces the load on bearings, compared to single-suction counterparts, by drawing water simultaneously from both sides, enhancing performance and longevity.
Our high-precision casting impeller is crafted to perfection, ensuring superior performance and reliability. Available in premium materials such as cast iron, stainless steel, and bronze, this impeller promises durability and exceptional operational efficiency.
Packing seals: A stalwart in sealing solutions, packing seals have been the cornerstone of pump sealing for years. Utilizing durable, rope-like materials to encircle the pump shaft, these seals effectively fill voids to curtail fluid loss. However, as gland packing wears over time, fluid loss may escalate, potentially impeding seamless lubrication and ease of replacement crucial for optimal functionality.
Mechanical seals: Embrace the future of sealing technology with mechanical seals, the superior choice over traditional packing seals for applications where leakage reduction is critical. Designed for resilience, these seals offer multiple sealing points that virtually eliminate leakage, promising durability and exemplary performance under demanding conditions.
Flexible couplings
Flexible couplings: Experience the benefits of flexibility and superior performance with our flexible couplings. Unlike rigid variants, these couplings adeptly accommodate movement, such as vibrations and thermal expansion, without sustaining damage. Ideal for scenarios with inevitable misalignment between drive and pump shafts, they absorb vibrations effectively, reducing noise levels. Although the design is more intricate and costly, the investment pays off through significant maintenance savings by safeguarding shafts and bearings against damage and wear.
For enhanced durability and performance, we proudly employ wear-resisting disc or pin couplings, ensuring long-lasting protection and efficiency.
Our state-of-the-art Versatile Horizontal Pump with Stainless Steel for Fire Protection stands as a beacon of efficiency and reliability in a multitude of demanding environments. This exceptional product finds its home in urban water supply and drainage systems, assuring seamless and consistent service across municipalities. It is instrumental in central heating systems and drainage, catering to the needs of bustling urban centers. The pump excels in industrial settings, powering operations in iron and steel metallurgy companies, oil refineries, and paper mills, where robust performance is paramount. Additionally, it is a critical component in the oil and power industries, airports, and chemical plants, where its resilience and durable stainless steel construction shine. Textile and sugar mills, along with plant mines, benefit from its unparalleled ability to handle consumer drainage demands. The pump's adaptability makes it a perfect fit for air conditioning systems, supporting water supply with precision. In the realm of agriculture, it delivers exceptional irrigation and drainage solutions, playing a pivotal role in various water projects that drive growth and sustainability.
Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. proudly maintains robust, long-standing partnerships with numerous prestigious domestic pump-testing institutions. Our commitment to quality and innovation is reflected in these strategic alliances:
National Quality Supervision and Inspection Center of Industrial Pumps, located in Tiexi District, Shengyang City – a powerhouse of excellence in pump testing.
Irrigation Machinery Products Quality Inspection Center of Machinery Industrial in Zhenjiang City – ensuring top-notch quality in irrigation machinery.
Ministry of Agriculture, Water Pump Quality Supervision and Testing Center, situated in Chongqing City – safeguarding the standards in agricultural water pump efficiency and reliability.
Shanghai Mechanical and Electrical Products Quality Inspection Center in the vibrant city of Shanghai – championing the integrity of mechanical and electrical products, and much more.
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