Double Suction Split Case Pump
Featured Double Suction Split Case Pumps |
FILIPUSI double suction split case pumps are engineered for high-volume liquid transfer in demanding industrial cooling, power generation, municipal water infrastructure, and large-scale HVAC systems. Available in both horizontal and vertical configurations, these single-stage, axially split-case pumps deliver outstanding hydraulic efficiency and continuous operational reliability, with standard flows from 50 to 10,000 m³/h and engineered pumps for higher flow rates available on request.
This high-efficiency pump is designed for the high-volume transfer of fresh water and neutral liquids with water-like physical properties. To handle corrosive media, we offer customizable configurations featuring stainless steel internal components or advanced SEBF high-performance epoxy powder coatings. The pumps are predominantly used in power plant cooling water circulation, municipal water supply and drainage, agricultural irrigation, and large commercial HVAC systems. The standard rotation is anticlockwise when viewed from the motor drive end.
The axially split casing design allows full access to the rotating assembly without disconnecting piping, significantly reducing maintenance downtime. The double-suction impeller balances axial hydraulic thrust, enabling vibration-free operation at very high flow rates with extended bearing and seal service life.
For shipboard seawater cooling, ballast, and marine applications: Please visit our dedicated Marine Double Suction Pump page » for bronze/duplex construction and classification society certification.
Applicable to: Power Plant Cooling Water Circulation, Municipal Water Supply & Drainage, Industrial Process Cooling, Large-Scale HVAC & District Energy, Agriculture & Irrigation, Water Treatment Plants, Fire Protection Systems, and Flood Control Stations.
Double Suction Pump Configurations
FILIPUSI offers two primary double suction split case pump architectures:
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| Parameter | Technical Specification |
|---|---|
| Flow Rate (Q) | 50 - 10,000 m³/h standard; engineered sizes for higher flow on request |
| Discharge Head (H) | 10 - 200 meters |
| Max. Fluid Temperature | -15°C to +120°C |
| Material Selection | Cast iron / cast steel (standard) | SS304/SS316, bronze, Duplex 2205 (optional for corrosive service) |
| Typical Applications | Power plant cooling, municipal water supply & drainage, industrial process cooling, large HVAC, agriculture & irrigation, fire protection |
| Inlet / Outlet Size | DN50 - DN1200 (DIN / ANSI / JIS flanges) |
All pumps undergo 100% hydrostatic pressure testing and dynamic shaft balancing before shipment. All pumps undergo 100% hydrostatic pressure testing and performance verification before shipment.
Core Advantages & Engineering Features
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Ultra-High Flow Capacity The double suction impeller balances axial thrust and delivers high flow rates for large-scale cooling and circulation systems, with engineered pumps available for the largest duties. |
Axially Split Casing Allows full access to the rotating assembly without disconnecting pipework, dramatically reducing maintenance downtime by up to 70%. |
High Energy Efficiency Optimized double-volute hydraulics reduce power consumption and support global energy efficiency standards, lowering operational costs. |
Smart Control Ready Compatible with VFD and PLC systems for precise flow management and energy-saving automation in municipal and industrial networks. |
Key Industries & Applications
• Power Plant Cooling Water Circulation: High-volume fresh water or seawater cooling for thermal power plants, nuclear power stations, and cogeneration facilities, delivering the large flows required by multi-hundred-megawatt turbine condensers.
• Municipal Water Supply & Drainage: Raw water intake from rivers and reservoirs, treated water distribution pumping, and stormwater/flood control stations. The axially split casing allows rapid maintenance during peak demand.
• Industrial Process Cooling: Cooling water circulation for refineries, petrochemical plants, steel mills, and manufacturing facilities, with continuous 24/7 operation, high reliability and low vibration.
• Large-Scale HVAC & District Energy: Chilled and hot water circulation for district heating/cooling networks, large commercial complexes, airports, and data centers. VFD control enables energy savings of 30–50%.
• Agriculture & Irrigation: Large-scale irrigation pumping for agricultural districts, golf courses, and land reclamation projects, providing high flow at moderate head over large areas.
• Water Treatment & Fire Protection: Raw water feed for treatment plants, backwash supply for filtration systems, and high-volume fire protection pumps for industrial facilities and airports.
Double Suction Pumps by Industrial Application
Horizontal Split Case Pump for Water Treatment Plants & Municipal Supply
Municipal water treatment plants and public water supply networks are the single largest application for horizontal double suction split case pumps. Raw water intake, treatment-plant transfer, and high-volume distribution all call for pumps that move very large flows (often 500-20,000 m³/h) at low-to-moderate heads with the highest possible efficiency and excellent suction characteristics. The double suction impeller draws liquid from both sides, cutting NPSH requirements in half and balancing axial thrust, which lets the pump run continuously for years with low vibration and minimal bearing wear — exactly what municipal utilities need for 24/7 supply duty.
Double Suction Pump for Power Plant Cooling Water
Thermal power plants, combined-cycle stations, and large industrial complexes circulate enormous volumes of cooling water through condensers and cooling towers. Horizontal split case pumps handle these high flows efficiently and reliably, and are available in cast iron, bronze-fitted, or stainless construction for fresh water or seawater once-through cooling. The axially split casing allows the entire rotating assembly to be lifted out for inspection without disturbing the suction and discharge piping, a major advantage during planned power-plant outages.
Split Case Pump for Irrigation, Flood Control & Large-Scale Water Transfer
Large agricultural irrigation districts, flood control and drainage stations, reservoir filling, and inter-basin water transfer projects depend on double suction pumps for their combination of very high flow, high efficiency, and tolerance of slightly sediment-laden water. The robust impeller and generous waterways handle small suspended solids better than high-head multistage designs, while the high hydraulic efficiency keeps pumping costs down over the long operating seasons typical of irrigation and drainage duty.
Double Suction Pump FAQ
Q1: What is the advantage of double suction over single suction for high-flow service?
A1: Double suction impellers cancel axial hydraulic thrust, allowing high flow rates with minimal vibration and extended bearing life. The axially split casing allows complete internal inspection without disconnecting piping, reducing maintenance downtime by up to 70%. For flows above roughly 500 m³/h, double suction pumps are generally more efficient and cost-effective than end suction pumps.
Q2: What materials are available for the casing and impeller?
A2: Standard construction uses cast iron or cast steel for fresh water and industrial cooling service. For corrosive media we offer SS304/SS316 stainless steel, nickel-aluminum bronze, Duplex stainless steel (2205), and advanced SEBF epoxy powder coatings. Materials are supplied with EN 10204 3.1 material test reports verifying chemical composition.
Q3: Can these pumps be integrated with existing PLC or VFD systems?
A3: Yes. The pumps are fully compatible with mainstream VFD and PLC control systems, enabling precise flow management, pressure regulation, and energy-saving automation, with standard Modbus and Profibus support for integration into SCADA networks.
Q4: What is the difference between horizontal and vertical split case pumps?
A4: Horizontal split case pumps are mounted on a baseplate, offering easy maintenance access and the highest flow capacity. Vertical split case pumps have a smaller footprint and are ideal for pump stations with limited floor space or retrofit projects. Both use the same double-suction impeller technology for high efficiency.
Q5: What is the lead time for custom double suction split case pumps?
A5: Standard cast iron configurations usually take 15–25 working days. Custom materials (stainless steel, bronze, or duplex) take 30–45 days depending on casting complexity, and large pumps may require 45–60 working days. Third-party inspection adds 5–10 working days.
Expert Support: FILIPUSI engineers provide free pump selection services. Send us your required flow, head, fluid properties, and piping layout, and we will recommend the optimal model with a full performance curve and dimensional drawing within 24 hours. Contact our engineering team »
REQUEST A DOUBLE SUCTION PUMP QUOTE »
Technical Resources & Guides
Ultimate Guide to Double Suction Pumps: Horizontal vs. Vertical Split Case Technology
High Flow Double Suction Centrifugal Pump Selection Guide
How to Select Corrosion-Resistant Double-Suction Split Pumps for Industrial Service
Double Suction Split Case Pumps: Working Principle & Selection
Double Suction Split Case Pumps | Selection
Related Pump Categories
Explore other pump series: End Suction Pumps | Multistage Pumps | Vertical Inline Pumps | Marine & Seawater Pumps
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