Introducing the SOW series: our horizontal single-stage split-casing double-suction centrifugal pumps represent the pinnacle of engineering excellence. As the latest evolution in split-casing technology, these pumps boast an impeccable spectrum, superior design, and exceptional performance. With their innovative and reliable construction, they promise effortless maintenance and extended durability. The SOW line includes 46 distinct models and 390 basic specifications, offering a range of options to suit your precise requirements. Utilizing both prime and modified impellers, along with cut-type designs, our pumps deliver a broad and efficient performance range, precisely tailored to meet diverse user demands in terms of flow and head parameters. Manufactured with meticulous precision and stringent quality control, these pumps stand at the forefront of domestic technology, aligning with ISO2548C, GB3216C, and GB/T5657 standards.
Our pumps are engineered with a double-suction impeller to minimize axial force, ensuring smooth and reliable operation. The CAD-designed hydraulic model optimizes the pump's performance, making it highly efficient. Whether utilizing the innovative prototype impeller or the adaptable modified impeller, these pumps are designed to excel across various operating conditions, boosting overall efficiency.
Built to withstand rigorous forces, these pumps feature a double volute design that significantly reduces radial force, ensuring minimal bearing stress and prolonging pump lifespan. Installation is straightforward, with automatic calibration of the pump cover for convenience. The relative positions of the pipeline, motor, and pump can be tailored to user site requirements. Our pumps guarantee swirl-free inlet, smooth operation, and minimal loss. Precision casting ensures a smooth finish on both the pump casing and impeller, enhancing anti-cavitation performance and maximizing 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 sophisticated split-case pumps are expertly designed as 'between-the-bearings' pumps. This innovative configuration means the impeller is mounted on a robust shaft supported by bearings on both sides, ensuring superior stability and performance.
Double-suction impeller: Our split-case pumps stand out as the quintessential pump type featuring a double-suction impeller. This advanced technology significantly reduces the load on the bearings compared to single-suction impellers, which only draw water from one side, thus enhancing the lifespan and efficiency of our pumps.
Our high-precision casting impeller is meticulously crafted to ensure unmatched performance. Available in durable materials such as cast iron, stainless steel, and bronze, it guarantees reliability and excellence in every application.
Packing seals have long been the go-to sealing solution, utilizing rope-like materials to encircle the pump shaft, effectively reducing fluid loss. However, it's essential to note that over time, these seals may wear, leading to increased fluid loss, potential lubrication challenges, and reduced ease of replacement, which is vital for optimal operation.
Mechanical seals are the modern choice, surpassing traditional packing seals, especially in applications where leakage is not an option. Built to endure rigorous conditions, these seals employ multiple sealing points to nearly eliminate leakage, offering a more robust and reliable sealing solution.
Flexible couplings
Flexible couplings, unlike their rigid counterparts, excel in accommodating movements such as vibrations and thermal expansions without sustaining damage. This makes them ideal for scenarios with unavoidable misalignment between drive and pump shafts. Their ability to absorb vibrations effectively reduces operating noise, though they come with a more intricate and costly design. However, the protection they offer to shafts and bearings from damage and premature wear translates into significant long-term maintenance savings.
Our pumps are equipped with advanced wear-resisting disc couplings or pin couplings, ensuring durability and superior performance.
Discover the incredible versatility of our Versatile Electric Motor Driven Double-Suction Centrifugal Pump, meticulously crafted for a wide array of applications. This powerful pump is your ultimate solution in urban water management, seamlessly handling both supply and drainage needs. Ideal for central heating systems, it ensures reliable performance in metropolitan infrastructures. Industrial giants like steel and metallurgy companies, refineries, and paper mills trust its efficiency, while its robust design supports the demands of oil and power plants. It's a cornerstone in airport construction and chemical plant operations, providing unmatched reliability. Textile and sugar mills benefit from its precision, and its prowess in plant mines consumer drainage systems is unparalleled. Perfect for air conditioning system water supply, agricultural irrigation, and various water projects, this pump is your go-to choice for comprehensive, efficient water management. Experience excellence in every drop.
Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. has cultivated esteemed long-term partnerships with premier domestic pump-testing institutions, showcasing our unwavering commitment to quality and innovation. Our esteemed collaborators include:
The prestigious National Quality Supervision and Inspection Center of Industrial Pumps, located in Tiexi District, Shenyang City, renowned for its rigorous standards and excellence.
The esteemed Irrigation Machinery Products Quality Inspection Center of Machinery Industrial, situated in Zhenjiang City, celebrated for its meticulous assessments and superior quality benchmarks.
The distinguished Ministry of Agriculture, Water Pump Quality Supervision and Testing Center in Chongqing City, known for its comprehensive evaluations and steadfast dedication to agricultural advancements.
The illustrious Shanghai Mechanical and Electrical Products Quality Inspection Center, based in Shanghai City, recognized for its cutting-edge inspection techniques and relentless pursuit of precision, along with many other notable institutions.
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