The SOW series represents the pinnacle of innovation in horizontal single-stage split-casing double-suction centrifugal pumps. This cutting-edge generation boasts a remarkable array of features: an impeccable model spectrum, unparalleled performance, and a groundbreaking, reliable structure. It offers effortless maintenance and longevity, with an extensive range of 46 models and 390 fundamental specifications. Utilizing both prime and modified impellers, this series offers a comprehensive spectrum of high-efficiency options, tailored to fulfill user requirements across various operational flow and head conditions. Each pump is meticulously crafted under stringent quality controls, earning a prominent position at the forefront of the domestic market. These pumps conform to the highest standards, including ISO2548C, GB3216C, and GB/T5657, ensuring top-tier quality and reliability.
Our exceptional double-suction impeller design dramatically minimizes axial force, enhancing the pump's stability. The incorporation of a state-of-the-art CAD hydraulic model ensures optimized design and superior performance. Additionally, the flexibility to use either a prototype or a modified impeller allows adaptation to diverse operational conditions, significantly boosting overall efficiency.
Ingeniously engineered to withstand various force conditions, our pump features a double volute configuration that effectively reduces radial force, resulting in lower bearing stress and extended lifespan. Installation is a breeze, with automatic pump cover calibration. The pump's design flexibility allows the relative position of the inlet and outlet pipelines of the motor and pump to be modified per user site requirements, ensuring a seamless operational flow. The pump operates smoothly with a swirl-free inlet, minimizing losses. Precision casting results in exceptionally smooth surfaces on the pump casing and impeller, delivering remarkable anti-cavitation performance 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: At the heart of engineering excellence, split-case pumps are celebrated as "between-the-bearings" pumps. This innovative design mounts the impeller on a shaft, elegantly supported by bearings on each side, ensuring enhanced stability and performance.
Double-suction impeller: Split-case pumps proudly stand as the predominant pump type featuring a double-suction impeller. This sophisticated design significantly reduces the load on the bearings compared to single-suction impellers, which only intake water from one side. The result is a harmonious balance and prolonged efficiency.
The high-precision casting impeller is a hallmark of performance excellence, crafted with precision in materials such as cast iron, stainless steel, and bronze, ensuring durability and optimal functionality.
Packing seals have long been the stalwart choice for sealing solutions, employing rope-like materials that embrace the pump shaft, adeptly filling voids and curbing fluid loss. However, as time passes, these materials can wear, potentially leading to increased fluid leakage and complications with lubrication or ease of replacement, thus challenging their effectiveness.
Mechanical seals are the go-to choice over traditional packing seals, particularly in applications where the avoidance of leakage is paramount. These seals are built tough, enduring more rigorous conditions and offering multiple sealing points to effectively eliminate leakage concerns, ensuring reliable operation and peace of mind.
Flexible couplings
In contrast to rigid couplings, flexible couplings expertly accommodate movements such as vibration and thermal expansion without sustaining damage, making them perfect for scenarios with unavoidable misalignment between drive and pump shafts. They absorb vibrations efficiently to reduce operational noise. Though more complex and costly in design, these couplings offer long-term maintenance savings by protecting the shaft and bearings against damage and premature wear.
We employ either wear-resisting disc coupling or pin coupling, offering tailored durability and performance.
This versatile and robust product is pivotal in a myriad of industries and essential for various water management applications. It is extensively employed in urban water supply and drainage, delivering reliability and efficiency to municipal systems. Additionally, it serves central heating systems, ensuring optimal performance in both residential and commercial buildings. The pump's capabilities are harnessed in the rigorous environments of iron and steel metallurgy companies, oil refineries, and paper mills, where it facilitates crucial operational processes. Its importance is further underscored in the oil sector, power plants, and the expansion of airport infrastructure, where it is indispensable for maintaining seamless operations. Furthermore, the chemical and textile industries, alongside sugar mills, rely on this pump for precise and efficient water management. It finds application in plant mines consumer drainage systems, contributing to effective resource management and sustainability. In the realm of climate control, it supports air conditioning systems by providing reliable water supply solutions. Lastly, its role in agricultural irrigation, drainage, and various water projects highlights its adaptability and significance across diverse sectors, delivering unparalleled performance and reliability.
Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. has proudly forged lasting partnerships with an array of prestigious domestic pump-testing institutions, ensuring quality and reliability at its core. These collaborations include:
The esteemed National Quality Supervision and Inspection Center of Industrial Pumps, located in the industrial hub of Tiexi District, Shengyang city,
The renowned Irrigation Machinery Products Quality Inspection Center of Machinery Industrial, situated in the historical Zhenjiang City,
The highly respected Ministry of Agriculture, Water Pump Quality Supervision and Testing Center, based in the vibrant city of Chongqing,
And the prestigious Shanghai Mechanical and Electrical Products Quality Inspection Center, right in the heart of Shanghai city.
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