The SOW series represents a pinnacle of innovation in the realm of horizontal single-stage split-casing double-suction centrifugal pumps. As the latest evolution in split-casing double-suction technology, it boasts an exceptional array of features: a meticulously designed spectrum, superior modeling, and unparalleled performance. Its structure is both groundbreaking and reliable, ensuring straightforward maintenance and extended lifespan. Our current lineup includes 46 models with 390 foundational specifications, each crafted with precision. The utilization of both prime and modified impellers, along with cutting-edge designs, allows for a comprehensive spectrum of operations, delivering high efficiency and an extensive performance range to meet diverse user demands across varied flow and head conditions. Rigorous manufacturing processes and strict quality control have propelled this product to a domestic leading level. This series aligns with ISO2548C, GB3216C, and GB/T5657 standards, guaranteeing excellence.
The design features a double-suction impeller meticulously engineered to minimize axial force, enhancing operational stability. Utilizing advanced CAD hydraulic modeling techniques, it achieves optimized design and superior performance. The addition of a prototype impeller, along with the option of a modified version, allows for adaptation to varying work conditions, significantly boosting efficiency.
Strategically designed to address force distribution, the pump features a double volute form to minimize radial force, thereby reducing bearing stress and extending the lifespan of the pump. Installation is remarkably user-friendly, with automatic pump cover calibration. The relative positions of motor connections and pipeline inputs/outputs can be tailored to user requirements, offering flexibility and customization. The pump inlet is engineered to eliminate swirl, ensuring smooth operation and minimizing energy loss. Precision casting techniques result in exceptionally smooth surfaces on both the pump casing and impeller, providing superior 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: Discover the remarkable engineering of our split-case pumps, designed with precision as 'between-the-bearings' pumps. This innovative design ensures the impeller is mounted securely on a shaft, supported by robust bearings on both sides, delivering enhanced stability and performance.
Double-suction impeller: Embrace the efficiency of our split-case pumps, renowned as the quintessential pump type featuring a double-suction impeller. This advanced design significantly reduces the load on bearings compared to single-suction impellers, ensuring longevity and superior operational efficiency.
Experience the excellence of our high-precision casting impeller, crafted to deliver impeccable performance. Available in premium materials such as cast iron, stainless steel, and bronze, this impeller guarantees durability and reliability.
Packing seals have been a trusted sealing solution for years, utilizing rope-like materials that closely wrap around the pump shaft. These seals expertly minimize fluid loss by filling dead space. However, as the material wears over time, fluid loss increases, potentially affecting lubrication and ease of replacement, which are critical for optimal functionality.
Mechanical seals are the preferred choice over traditional packing seals for applications demanding minimal leakage. These seals boast enhanced durability and are engineered to withstand rigorous conditions. With multiple sealing points, mechanical seals effectively mitigate leakage issues, ensuring consistent and reliable performance.
Flexible couplings
Unlike their rigid counterparts, flexible couplings are engineered to accommodate movement, such as vibrations and thermal expansion, without incurring damage. Ideal for applications with some misalignment between drive and pump shafts, these couplings excel at absorbing vibrations, thereby reducing operational noise. Despite a more complex and costly design, flexible couplings offer long-term maintenance savings by protecting shafts and bearings from damage and premature wear.
We employ wear-resistant disc couplings or pin couplings to ensure superior durability and performance.
Our Durable Water Pump with Stainless Steel for Fire Fighting Applications showcases unparalleled versatility across a broad spectrum of industries. It is an essential component for urban water supply and drainage systems, central heating, and municipal services. This powerhouse of performance is indispensable to iron and steel metallurgy corporations, oil refineries, and paper mills, providing efficient solutions for all. Whether it's the robust demands of power plants and airports or the intricacies of chemical and textile factories, our pump stands ready. In the realm of agrarian needs, it excels in irrigation and drainage. Furthermore, its unmatched reliability is perfect for consumer drainage systems, air conditioning water supply, and countless other water-intensive projects. Invest in our solution to ensure seamless operations and peace of mind across every application.
Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. has forged illustrious and enduring partnerships with an array of prestigious domestic pump-testing institutions, laying the groundwork for superior quality assurance and innovation. These esteemed collaborations include:
The National Quality Supervision and Inspection Center of Industrial Pumps, strategically located in Tiexi District of Shengyang City, serves as a beacon of excellence in pump quality evaluation.
The Irrigation Machinery Products Quality Inspection Center of Machinery Industrial, nestled in Zhenjiang City, is committed to upholding the highest standards in irrigation machinery product testing.
The Ministry of Agriculture's Water Pump Quality Supervision and Testing Center in Chongqing City stands as a pillar of reliability and precision in agricultural water pump testing.
The Shanghai Mechanical and Electrical Products Quality Inspection Center, situated in the bustling heart of Shanghai City, epitomizes unparalleled accuracy and meticulousness in product inspection and testing.
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