The SOW series horizontal single-stage split-casing double-suction centrifugal pump represents the pinnacle of modern engineering, embodying the culmination of advanced technology in pump design. Noteworthy for its comprehensive spectrum, superior model, and exceptional performance, this pump boasts an innovative, dependable structure that ensures effortless maintenance alongside an extended operational lifespan. Currently, our SOW pump range includes 46 distinct models and 390 core specifications. With its advanced impeller designs—featuring prime, modified and cutting-edge options—this pump offers a wide-ranging spectrum of high efficiency and performance capabilities. It is meticulously engineered to meet every user's requirements for flow and head at any operational point. Meticulous craftsmanship and rigorous quality control elevate this product to a position of domestic leadership. This series of pumps strictly adheres to ISO2548C, GB3216C, and GB/T5657 standards, ensuring reliability and excellence.
The double-suction impeller is ingeniously designed to minimize axial force, enhancing the pump's durability and reliability. Utilizing a state-of-the-art CAD hydraulic model, it has been fine-tuned for optimal performance. The inclusion of a prototype impeller, along with an adaptable modified impeller, allows it to excel in diverse operational conditions while significantly boosting efficiency.
This pump features a double volute configuration, which is expertly crafted to diminish radial force, thereby reducing bearing stress and significantly extending the pump's lifespan. Installation is straightforward, with automatic calibration of the pump cover ensuring precision. The relative positioning of the motor and pump, along with the inlet and outlet pipelines, can be easily tailored to meet specific site requirements, offering unparalleled flexibility. Engineered for smooth operation with no inlet swirl and minimal loss, the pump's casing and impeller surfaces undergo precision casting for exceptional smoothness, delivering robust anti-cavitation properties and superior 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: Innovatively engineered, our split-case pumps are recognized as 'between-the-bearings' pumps. This design strategically mounts the impeller on a shaft, which is expertly supported by robust bearings on both sides, ensuring superior stability and efficiency.
Double-suction impeller: Our split-case pumps are uniquely distinguished by their double-suction impeller, a standout feature among common pump types. This advanced impeller design significantly reduces the load on bearings compared to single-suction impellers, which draw in water from just one side.
Our high-precision casting impeller promises exceptional performance, crafted from premium materials such as cast iron, stainless steel, and bronze, ensuring durability and efficiency in every application.
Packing seals, time-honored and widely trusted, use rope-like materials to wrap around the pump shaft, skillfully filling dead spaces and minimizing fluid loss. Though they may wear over time, potentially increasing fluid loss and affecting lubrication, they remain a functional sealing solution for many applications.
Mechanical seals, preferred for their robustness and reliability, have surpassed traditional packing seals, especially in applications where leakage is unacceptable. These seals feature multiple sealing points, effectively minimizing leakage and enduring harsher conditions than their predecessors.
Flexible couplings
Flexible couplings, unlike their rigid counterparts, adeptly handle movements such as vibrations and thermal expansions without sustaining damage. Ideal for situations with unavoidable misalignment, they excellently absorb vibrations, thereby reducing operating noise. While their intricate design may come at a higher cost, the long-term savings in maintenance due to their protective capabilities justify the investment.
We utilize wear-resistant disc couplings or pin couplings, offering optimal durability and performance.
Our Versatile Double-Suction Fire Pump with Electric Motor is engineered for a broad spectrum of applications. It is extensively utilized in urban water supply and drainage systems, ensuring seamless urban hydration and effective sewage management. This powerhouse is pivotal in central heating systems, providing efficient water circulation. It finds significant application in heavy industries, including iron and steel metallurgy, oil refineries, and paper mills, where robust and reliable water handling is essential. Additionally, it serves the realms of power generation, airport infrastructure, and diverse chemical facilities. The pump proves indispensable in textile and sugar mills, offering consistency in industrial processes. Furthermore, its capabilities extend to agricultural irrigation, drainage, and comprehensive water projects, covering air conditioning systems and mine consumer drainage solutions. Its versatility and reliability make it a quintessential component in varied sectors, ensuring top-notch performance and safety.
Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. has forged esteemed and enduring partnerships with several preeminent domestic pump-testing institutions, such as:
The prestigious National Quality Supervision and Inspection Center of Industrial Pumps located in Tiexi District, Shengyang City,
The renowned Irrigation Machinery Products Quality Inspection Center of Machinery Industrial in Zhenjiang City,
The esteemed Ministry of Agriculture's Water Pump Quality Supervision and Testing Center in Chongqing City,
And the distinguished Shanghai Mechanical and Electrical Products Quality Inspection Center situated in Shanghai City, among others.
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