The SOW series of horizontal, single-stage, split-casing, double-suction centrifugal pumps represent the pinnacle of innovative design and engineering excellence in modern pump technology. These pumps boast a perfect spectrum of models with superior performance metrics, innovative and reliable structural design, ease of maintenance, and exceptional longevity. With an impressive lineup of 46 models and 390 basic specifications, the SOW pump stands as a testament to versatility. It employs both prime and modified impellers as well as cutting-edge design to ensure a broad-based spectrum of exceptional efficiency. This adaptability guarantees optimal performance, tailored to meet user needs across various flow and head requirements. Crafted with precision and quality control, our SOW pump series has achieved domestic leadership by adhering to ISO2548C, GB3216C, GB/T5657 standards.
Engineered with a double-suction impeller, this design minimizes axial force, enhancing pump stability and efficiency. By leveraging advanced CAD hydraulic modeling, the pump achieves an optimized design for outstanding performance. The integration of both prototype and modified impellers allows adaptation to a variety of working conditions, further boosting efficiency.
The pump's design incorporates a double volute form that significantly reduces radial force, extending the life of bearings and the pump itself. The installation process is remarkably straightforward, boasting automatic calibration of the pump cover. With adaptable positioning for motor and pump connections, the system can be aligned to suit user-specific site requirements. The pump inlet ensures swirl-free operation, smooth running, and minimal loss. Thanks to precision casting, both the pump casing and impeller surfaces are exceptionally smooth, delivering superior anti-cavitation performance and top-tier 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 excel as "between-the-bearings" solutions, ingeniously mounting the impeller on a robust shaft supported with precision bearings on both sides. This strategic design enhances durability and efficiency.
Double-suction impeller: Renowned as the only COMMON pump type featuring a double-suction impeller, split-case pumps revolutionize load management on the bearings. By drawing water from both sides, this design significantly minimizes stress, outperforming single-suction counterparts.
Crafted through high-precision casting, our impellers promise unparalleled performance. Available in cast iron, stainless steel, and bronze, these materials deliver exceptional strength and reliability.
Packing seals have long been trusted as foundational sealing solutions, utilizing rope-like materials that encircle the pump shaft to effectively fill dead spaces and control fluid escape. Over time, however, wear can increase fluid loss, potentially impair lubrication and complicate replacements necessary for optimal operation.
Mechanical seals are the modern solution over traditional packing seals, especially in applications where leakage must be minimal. These seals are more durable, designed to withstand rigorous conditions, and utilize multiple sealing points to virtually eliminate leakage concerns.
Flexible Couplings
Flexible couplings distinguish themselves from rigid alternatives by accommodating movements such as vibrations and thermal expansions without sustaining damage. Ideal for scenarios with unavoidable misalignment, they excel by absorbing vibrations and minimizing operational noise. Although their design is more intricate and costly, they significantly protect shafts and bearings from damage, delivering substantial maintenance savings over time.
We incorporate wear-resisting disc or pin couplings, ensuring longevity and robust performance in our systems.
Experience unparalleled versatility with our powerful split-casing pump, meticulously engineered to meet the diverse demands of a multitude of sectors. This indispensable asset finds its place in urban water supply and drainage, ensuring seamless fluid management in bustling cities. Perfectly suited for central heating systems and drainage solutions, it reliably supports the backbone of urban infrastructure. In the industrial realm, it serves iron and steel metallurgy companies, oil refineries, and paper mills with steadfast precision. Its robust performance extends to oil fields and power plants, where it upholds the rigorous standards required. The pump is also indispensable in the expansive development of airport construction and chemical plants. Its adaptability shines in textile mills, sugar mills, and consumer drainage systems within plant mines. Moreover, it seamlessly integrates into air conditioning systems for water supply, ushering in comfort and efficiency. The agricultural sector benefits immensely through its ability to enhance irrigation and drainage processes, simplifying various water projects with consistent reliability and excellence.
Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. has forged prestigious, enduring partnerships with eminent domestic pump-testing behemoths. Some of these esteemed collaborations include:
The renowned National Quality Supervision and Inspection Center of Industrial Pumps located in Tiexi District, Shenyang City,
The esteemed Irrigation Machinery Products Quality Inspection Center of the Machinery Industry in Zhenjiang City,
The authoritative Ministry of Agriculture's Water Pump Quality Supervision and Testing Center based in Chongqing City,
And the distinguished Shanghai Mechanical and Electrical Products Quality Inspection Center nestled in the vibrant heart of Shanghai City, among others.
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