Split-case pump (split-case circulation), also known as a single-stage double-suction centrifugal pump, is characterised by its high flow capacity for conveying media.
Operating principle of split-case pumps: The impeller is mounted within the pump casing and secured to the pump shaft, which is directly driven by an electric motor. A liquid inlet at the centre of the casing connects to the suction pipe. Fluid enters the pump via the foot valve and suction pipe. The liquid discharge port on the casing connects to the discharge pipe. At a constant pump speed, the head and flow rate are dependent on the impeller diameter.
Split Case Pump: A Comprehensive Overview
As a professional manufacturer since 1990, YINJIA presents its flagship solution for high-flow, high-reliability applications: the S(SH) series single-stage, split case & double suction pump. This pump is engineered around an advanced hydraulic model, renowned in China for its exceptional efficiency and significant energy savings. Designed to move vast volumes of clean water and similar liquids (up to 80°C), it is the ideal powerhouse for municipal infrastructure and large-scale industrial projects. The unique horizontally-split casing design allows for quick and easy access to the entire rotor assembly without disturbing the motor or piping, while the double-suction impeller ensures balanced axial forces, minimizing wear and enabling unparalleled operational stability. With an impressive flow range of 126 to 12,500 m³/h and a head range of 9 to 140 meters, this pump is built to deliver dependable performance in the most demanding water supply, drainage, and circulation systems.
Key Functions of Split Case Pump
Large-Volume Fluid Transfer: The primary function of the split case pump is to efficiently move enormous quantities of water. Its double-suction impeller allows fluid to enter from both sides, enabling a high flow rate with a stable, single-stage design, making it perfect for city water works, power stations, and large-scale irrigation.
High-Efficiency, Energy-Saving Operation: Designed with a superior hydraulic model, this pump minimizes energy loss during operation. Its optimized flow path and impeller design ensure that maximum fluid movement is achieved per unit of energy consumed, leading to substantial cost savings in continuous or large-volume applications.
Simplified Maintenance and Inspection: The defining "split case" feature, where the pump casing is horizontally divided, allows the entire rotor assembly (including the impeller and shaft) to be lifted out for inspection, maintenance, or repair without disconnecting any pipes or moving the motor. This drastically reduces downtime and maintenance labor.
Advantages of Split Case Pump
Exceptional Reliability and Long Service Life: The double-suction impeller design inherently balances axial hydraulic forces, which drastically reduces bearing load and shaft deflection. This results in smoother operation, significantly less wear on components, and an extended service life, even under continuous heavy-duty operation.
Unmatched Maintenance Accessibility: The split-case design is the pinnacle of service-friendly engineering. It provides full access to all internal components—impeller, shaft, sleeves, and bearings—by simply lifting the upper casing half. This feature is invaluable for preventative maintenance and rapid repair, ensuring maximum system uptime.
Robust Construction for Demanding Environments: Built to withstand the rigors of 24/7 operation in municipal and industrial settings, the pump utilizes durable materials and a rigid structure. This robust construction ensures reliability in critical applications like urban flood control, water supply, and large building air conditioning systems.
Operational Stability and Smooth Performance: The balanced hydraulic design and heavy-duty construction work in concert to deliver exceptionally smooth and vibration-free operation. This stability is crucial for protecting associated pipework and infrastructure while ensuring consistent, reliable performance.
Applications of Split Case Pump
Municipal Water Supply and Drainage: The cornerstone of urban water infrastructure, used for drawing raw water, supplying treated water to cities, and managing stormwater and wastewater drainage.
Industrial Cooling and Process Water: Essential for circulating massive volumes of cooling water in power stations, manufacturing plants, and large central air-conditioning systems for commercial complexes and data centers.
Large-Scale Agricultural and Flood Control: Ideal for major farmland irrigation and drainage projects, as well as for pumping stations dedicated to flood control and water conservancy management.
Heating and HVAC Systems: A reliable component in district heating systems and the primary circulation loops of large building heating, ventilation, and air conditioning systems.
Why Choose Split Case Pump?
Long-Term Cost Efficiency: The combination of high energy efficiency, minimal maintenance requirements, and exceptional durability results in a remarkably low total cost of ownership over the pump's extended lifespan, providing outstanding return on investment.
Proven Performance in Critical Roles: With a performance envelope covering extreme flows and pressures, this pump is engineered to meet the challenges of the most critical applications, ensuring continuity in operations for cities and industries.
Engineered for Serviceability: By prioritizing easy access for maintenance, the split case pump design directly addresses the need to reduce operational downtime and lower long-term servicing costs, making it a smart, practical choice for any large-scale facility.
Conclusion
The Split Case Pump from YINJIA embodies the principles of robust engineering, operational efficiency, and unparalleled serviceability. Its unique double-suction, horizontally-split design makes it the definitive choice for moving vast quantities of water in municipal, industrial, and agricultural settings where reliability and ease of maintenance are paramount. By choosing YINJIA's S(SH) series pump, you are investing in a proven, high-performance asset that guarantees efficient, dependable, and long-lasting service for your most critical and high-flow water handling needs.
