The SOW series horizontal single-stage split-casing double-suction centrifugal pump is the epitome of modern engineering in pump technology. As the latest evolution in the realm of split-casing double-suction pumps, it boasts a rich array of distinguished features including an exquisite model spectrum, excellent performance, a structure that is both innovative and trustworthy, and a life span that promises longevity alongside effortless maintenance. Our present SOW pump offers an impressive variety with 46 distinct models and 390 fundamental specifications. Utilizing both prime and modified impellers, along with a cutting-edge type, it offers an extensive spectrum brimming with high efficiency, catering seamlessly to user needs across any operational flow and head requirement. Crafted with meticulous attention to detail and subjected to rigorous quality control, this product stands at the forefront of domestic technology. Designed to be in compliance with the esteemed ISO2548C, GB3216C, and GB/T5657 standards, this series redefines reliability in pumping solutions.
A double-suction impeller is integrated to minimize axial force, ensuring minimal stress on components. Utilizing a state-of-the-art CAD hydraulic model, this pump is optimized for superior design and performance. The incorporation of a prototype impeller, with the option to employ a modified impeller, allows for adaptation to diverse working conditions, further enhancing efficiency and versatility.
In response to force conditions, the pump features a double volute form to effectively mitigate radial forces, resulting in reduced bearing stress and prolonged lifespan. Installation is simplified with automatic pump cover calibration, while the relative position of the motor and pump's inlet and outlet can be tailored to meet specific user site requirements. The pump's design ensures a swirl-free inlet, smooth operation, and minimal energy loss. Precision casting facilitates a smooth surface on both the pump casing and impeller, significantly bolstering anti-cavitation performance and delivering remarkable 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: Split-case pumps are ingeniously designed as 'between-the-bearings' systems. This distinct design securely mounts the impeller on a shaft, which is robustly supported by bearings on both sides. This balanced approach ensures optimal performance and longevity.
Double-Suction Impeller: The split-case pumps stand out as the only prevalent pump type featuring a double-suction impeller. This advanced design significantly reduces the load on the bearings compared to single-suction impellers, which draw water from only one side, ensuring enhanced efficiency and durability.
High-Precision Casting: Our impellers are crafted with the utmost precision through high-quality casting, available in materials such as cast iron, stainless steel, and bronze. This meticulous process guarantees top-tier performance and reliability.
Packing Seals: These seals have been a cornerstone in sealing technology for many years, utilizing rope-like materials that encircle the pump shaft, minimizing fluid escape. However, as these materials wear over time, the potential for increased fluid loss grows, possibly affecting lubrication and ease of replacement, which are critical for optimal functionality.
Mechanical Seals: In applications where leakage is unacceptable, mechanical seals are the superior choice over traditional packing seals. Renowned for their durability, these seals are engineered to withstand significant stress. They function with multiple sealing points, virtually eliminating leakage issues, making them a reliable and lasting solution.
Flexible Couplings
Flexible Couplings: Unlike their rigid counterparts, flexible couplings excel in accommodating movements such as vibrations and thermal expansion without sustaining damage. Ideal for scenarios with some misalignment between drive and pump shafts, they effectively absorb vibrations and diminish excessive operational noise. While these couplings are more complex and costly, they offer long-term maintenance savings by shielding shafts and bearings from damage and wear.
Our offerings include wear-resisting disc coupling or pin coupling, tailored for superior performance and longevity.
Introducing the versatile and reliable Efficient Double-Suction Centrifugal Pump with Mechanical Seal for Fire Safety by Shanghai Semhai Pump Co., Ltd. Our cutting-edge pump is meticulously engineered to excel in a diverse array of applications. It is the ideal choice for urban water supply and drainage, ensuring efficient and seamless water management in bustling cityscapes. The pump is indispensable in central heating systems and drainage, providing optimal performance in maintaining comfort and safety. Trusted by leading iron and steel metallurgy companies and oil refineries, it stands as a beacon of durability and efficacy. Our pump is also a preferred solution for paper mills, chemical plants, textile mills, and sugar mills, seamlessly integrating into their demanding operations. It plays a crucial role in power plants, airports, and construction projects, demonstrating unparalleled reliability. In the realm of agricultural irrigation and various water projects, our pump guarantees superior water distribution and management. Furthermore, it expertly supports air conditioning systems and consumer drainage systems in plant mines, proving its versatility and excellence in varied industries.
Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. has strategically forged long-standing partnerships with several prominent domestic pump-testing powerhouses, ensuring the utmost reliability and excellence of its products. These collaborations include esteemed institutions like:
The National Quality Supervision and Inspection Center of Industrial Pumps in Tiexi District, Shengyang City,
The Irrigation Machinery Products Quality Inspection Center of Machinery Industrial in Zhenjiang City,
The Ministry of Agriculture's Water Pump Quality Supervision and Testing Center in Chongqing City,
And the Shanghai Mechanical and Electrical Products Quality Inspection Center in Shanghai City, among others.
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