The SOW series horizontal single-stage split-casing double-suction centrifugal pump represents the pinnacle of modern engineering in pump design. This latest generation pump boasts a flawless spectrum, exceptional design, and unparalleled performance. Its innovative, reliable structure ensures easy maintenance and extends its lifespan significantly. Our current line-up includes an impressive 46 models with 390 basic specifications, all meticulously crafted to meet diverse needs. By employing both prime and modified impellers, along with cutting types, the SOW pump delivers broad-spectrum efficiency and performance, catering to every requirement in both flow and head. With carefully controlled manufacturing processes and stringent quality checks, this product has achieved a leading position domestically. This exceptional series complies with ISO2548C, GB3216C, and GB/T5657 standards.
Featuring a double-suction impeller, the SOW pump minimizes axial force, enhancing its durability. The CAD hydraulic model ensures an optimized design, delivering superior performance. To address varying operational needs, it includes a prototype impeller and can also be equipped with a modified impeller, boosting efficiency across different conditions.
Designed with precision, the pump utilizes a double volute form to minimize radial force, ensuring smaller bearing loads and extended service life. It offers effortless installation with automatic pump cover calibration. The motor and pump's inlet and outlet positions are adjustable to fit user site requirements. The pump is engineered for swirl-free inlet operation, smooth functionality, and minimal loss. Precision casting renders the pump casing and impeller surfaces exceptionally smooth, significantly enhancing anti-cavitation properties and overall 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: Embrace the exceptional design of split-case pumps, renowned for their 'between-the-bearings' configuration. This innovative design strategically positions the impeller on a shaft, which is expertly supported by robust bearings on both sides. Such a setup ensures unparalleled stability and performance.
Double-suction impeller: Discover the unique engineering marvel of split-case pumps, celebrated as the sole COMMON pump type equipped with a double-suction impeller. This distinctive feature dramatically reduces the load on bearings compared to a single-suction design, which intakes water from just one side. Experience the superior efficiency and prolonged durability provided by this remarkable impeller design.
Our high-precision casting impeller guarantees superior performance, crafted meticulously from premium materials such as cast iron, stainless steel, and bronze. Each choice ensures optimal durability and reliability to meet diverse operational demands.
Packing seals have long been the favored sealing solution, utilizing rope-like materials that wrap around the pump shaft. This design effectively fills dead spaces and minimizes fluid loss. Over time, as the gland packing wears, fluid loss may increase, potentially impairing lubrication and ease-of-replacement—both crucial for seamless operations.
For applications demanding utmost reliability, mechanical seals are the go-to choice over traditional packing seals. These advanced seals offer unmatched durability, crafted to withstand significant challenges. With multiple sealing points, mechanical seals effectively minimize leakage, ensuring consistent and dependable performance across various scenarios.
Flexible couplings
Flexible couplings offer a versatile solution, adept at accommodating vibrations and thermal expansions without incurring damage. Ideal for scenarios with inherent misalignment between drive and pump shafts, they adeptly absorb vibrations, reducing excessive noise. Although their design is complex and costly, the maintenance savings achieved through protection against damage and wear justify the investment.
In our products, we incorporate wear-resisting disc couplings or pin couplings, ensuring optimal performance and longevity.
This exceptional product finds extensive applications across a myriad of industries and infrastructural projects. It is an indispensable asset in urban water supply and drainage systems, central heating systems, and is equally vital for iron and steel metallurgy companies. Additionally, its robustness makes it ideal for oil refineries, paper mills, and the oil sector, while being a key player in power plants and airport construction. Chemical plants, textile mills, and sugar mills also benefit from its high efficiency. It is essential for plant and mine drainage systems, water supply in air conditioning systems, and is a boon for agricultural irrigation and drainage. This pump is truly versatile, perfect for a vast array of water-related projects.
Highly Specialized Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. has cultivated enduring and strategic partnerships with numerous prominent domestic pump-testing authorities, including:
The National Quality Supervision and Inspection Center of Industrial Pumps, located in the vibrant Tiexi District, Shengyang City,
The Irrigation Machinery Products Quality Inspection Center of the Machinery Industry in Zhenjiang City,
The Ministry of Agriculture's Water Pump Quality Supervision and Testing Center, nestled in the dynamic city of Chongqing,
And the renowned Shanghai Mechanical and Electrical Products Quality Inspection Center, right in the heart of Shanghai City, among others.
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