The SOW series is an exceptional collection of horizontal single-stage split-casing double-suction centrifugal pumps. This latest-generation marvel boasts a remarkable spectrum, superior model, and extraordinary performance. With its innovative and reliable structure, it offers effortless maintenance and an impressive longevity. Our current lineup includes 46 models and 390 basic specifications, all designed with a prime impeller and various modified impeller options to ensure a comprehensive spectrum of high efficiency and performance. These pumps are meticulously crafted to satisfy user requirements across various work flows and head pressures. Through precision manufacturing and stringent quality control, the SOW series has set a new benchmark in the industry, reaching the domestic leading level. Furthermore, these pumps comply with prestigious standards including ISO2548C, GB3216C, and GB/T5657.
Our pumps feature a double-suction impeller, crafted to considerably minimize axial force, enhancing longevity and reliability. The CAD hydraulic model is integrated to refine the optimal design, ensuring superior performance. Moreover, the addition of a prototype impeller and the option for a modified impeller allows adaptability to diverse working conditions, significantly boosting efficiency.
Engineered with precision, the pump incorporates a double volute form to effectively diminish radial force, ensuring minimal bearing pressure and extending operational life. With its user-friendly installation and the capability for automatic pump cover calibration, it offers unmatched convenience. The in-and-out pipeline positioning is adjustable as per user site requirements, resulting in a swirl-free pump inlet for smooth operation and low loss. Precision casting ensures the pump casing and impeller surfaces are exceptionally smooth, providing 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: Experience the engineering marvel of split-case pumps, aptly known as 'between-the-bearings' pumps. This innovative design mounts the impeller on a shaft, with robust support from bearings on both sides, ensuring stability and smooth operation.
Double-suction impeller: Discover the uniqueness of split-case pumps, celebrated as the only prevalent pump type boasting a double-suction impeller. This design marvel significantly reduces bearing loads compared to single-suction impellers, ensuring enhanced longevity and efficiency.
High-precision casting impeller: Our high-precision casting impeller guarantees superior performance, crafted from premium materials like cast iron, stainless steel, and bronze, ensuring reliability and durability under demanding conditions.
Packing seals: For years, packing seals have been the cornerstone of sealing solutions. These innovative rope-like materials wrap around the shaft, minimizing fluid loss by filling in dead spaces. While traditional, these seals may wear over time, impacting lubrication and ease of replacement. Continuous maintenance ensures optimal performance.
Mechanical seals: Preferred for applications demanding zero leakage, mechanical seals outshine traditional packing seals. Crafted for endurance, they utilize multiple sealing points to virtually eradicate leakage, offering enhanced durability and reliability in diverse environments.
Flexible couplings
Flexible couplings: Unlike their rigid counterparts, flexible couplings expertly accommodate movement, such as vibrations and thermal expansion, without sustaining damage. Ideal for setups with unavoidable misalignment, they also reduce operational noise. Their sophisticated design, while more costly, offers long-term maintenance savings by shielding shafts and bearings from premature wear.
Wear-resisting couplings: We employ advanced wear-resisting disc or pin couplings, ensuring durability and longevity in challenging applications.
This exceptional product finds its extensive application across a multitude of sectors, encompassing urban water supply and drainage, central heating systems, and beyond. It's a trusted choice for industries such as iron and steel metallurgy, oil refineries, and paper mills. In addition, it plays a critical role in maintaining the seamless operations of airports, chemical plants, textile and sugar mills, as well as power plants. Its versatility extends to consumer drainage systems in plant mines, and it's an integral part of air conditioning water supply systems. Moreover, it's a cornerstone in agricultural irrigation and drainage, proving indispensable in various water projects across diverse landscapes.
Esteemed Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. has cultivated esteemed, long-standing partnerships with some of the most prestigious pump-testing institutions in the industry, ensuring top-notch quality and performance:
The National Quality Supervision and Inspection Center of Industrial Pumps, located in Tiexi District, Shengyang City, a beacon of excellence in pump quality assurance.
The Irrigation Machinery Products Quality Inspection Center of Machinery Industry, nestled in Zhenjiang City, renowned for its meticulous scrutiny and precision.
The Ministry of Agriculture's Water Pump Quality Supervision and Testing Center, based in Chongqing City, a vanguard in agricultural water pump testing.
The Shanghai Mechanical and Electrical Products Quality Inspection Center, situated in the vibrant city of Shanghai, championing the highest standards in product quality.
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