Introducing the SOW Series: a groundbreaking marvel in horizontal single-stage, split-casing, double-suction centrifugal pumps. This latest-generation pump boasts an exceptional spectrum and superior model that sets it apart with its outstanding performance. It is crafted with an innovative and reliable structure, ensuring easy maintenance and a prolonged lifespan. Within our esteemed SOW pump lineup, we proudly offer 46 models, encompassing 390 basic specifications. Meticulously engineered with prime and modified impellers, as well as cutting-edge designs, this collection covers a broad-based spectrum, delivering high efficiency and a wide performance range. Tailored to meet user needs at any point in the workflow and head, our pumps are carefully manufactured under stringent quality control, achieving unparalleled domestic prominence. Adhering to ISO2548C, GB3216C, GB/T5657 standards, this series exemplifies excellence.
Our state-of-the-art double-suction impeller is designed to minimize axial force, ensuring robust and efficient operation. Utilizing advanced CAD hydraulic models, we optimize the best design for superior performance. Furthermore, the inclusion of a prototype impeller, alongside the option of a modified impeller, allows for adaptation to diverse working conditions, effectively enhancing efficiency across the board.
Engineered with precision, the pump features a double volute form to diminish radial force, resulting in reduced bearing stress and extended lifespan. Installation is a breeze, with an automatic calibration of the pump cover. The configuration of inlets and outlets can be adjusted to fit user site requirements effortlessly. Experience smooth flow with no inlet swirl, ensuring steady operation and minimal loss. Our precision casting technique guarantees a pump casing and impeller surface that is exceptionally smooth, showcasing remarkable anti-cavitation performance and unparalleled 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: Our innovative split-case pumps, renowned as 'between-the-bearings' pumps, boast an engineering marvel where the impeller is mounted on a shaft, meticulously supported by bearings on either side. This strategic design ensures optimal performance and longevity.
Double-suction impeller: Unveiling the unique charm of split-case pumps, they are prominently recognized for their rare double-suction impeller. This exceptional feature imposes significantly reduced loads on the bearings compared to single-suction impellers, which only draw water from a single side.
Crafted with precision, our high-precision casting impeller guarantees stellar performance. Available in robust materials like cast iron, stainless steel, and bronze, it promises durability and efficiency.
Packing seals have long been the cornerstone of sealing solutions. Utilizing rope-like materials, they expertly encircle the pump shaft, minimizing fluid loss. However, as time progresses, the wear of gland packing can hinder lubrication and ease of replacement, gradually increasing fluid loss.
In the realm of advanced applications, mechanical seals outshine traditional packing seals, ensuring minimal leakage. These robust seals are engineered for resilience, employing multiple sealing points to virtually eradicate leakage challenges, proving superior in durability and reliability.
Flexible couplings
In stark contrast to rigid couplings, flexible couplings excel in accommodating movement such as vibrations and thermal expansion without causing harm. Ideal for unavoidable misalignments between the drive and pump shafts, they not only reduce operating noise but also promise long-term maintenance savings due to their protective nature against shaft and bearing damage.
For enhanced performance, we incorporate wear-resistant disc coupling or pin coupling, tailored to withstand demanding conditions with grace and reliability.
The Versatile Split-Casing Pump is your go-to solution for a plethora of applications across diverse sectors. Whether it's for ensuring reliable urban water supply and efficient drainage or enhancing the thermal comfort of central heating systems, this pump excels. It's a vital component in the operations of steel and metallurgy industries, oil refineries, and paper mills. Additionally, it supports the oil sector, power plants, and airport construction projects seamlessly. Its adaptability extends to chemical plants, textile mills, and sugar mills, providing optimal support for both power generation and drainage requirements. From consumer drainage systems in plant mines to the precise demands of air conditioning water supply systems, this pump is engineered to perform. Furthermore, it's indispensable for agricultural irrigation and a myriad of water management projects, proving its indispensable value and versatile capabilities.
Esteemed Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. has proudly fostered enduring partnerships with several 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 situated in Zhenjiang City.
The esteemed Ministry of Agriculture, Water Pump Quality Supervision and Testing Center based in Chongqing City.
The prestigious Shanghai Mechanical and Electrical Products Quality Inspection Center (Shanghai City), among others.
Audited Supplier 
){kind=link}