An axially split volute casing pump—commonly referred to as a horizontal split case pump or horizontal shaft double-suction centrifugal pump (our XSP series)—is the preferred high-flow centrifugal pump for water pumping stations worldwide. Its hallmark design splits the volute casing along the shaft centerline, enabling full access to impellers, bearings, wear rings, and shaft seals without disconnecting suction/discharge piping or removing the driver motor.
This design is particularly advantageous for municipal raw water intake stations, water distribution booster stations, wastewater lift stations, and large-scale irrigation pumping stations. In these continuous heavy-duty, high-volume transfer scenarios, axially split volute pumps significantly outperform vertical turbine and end-suction pumps in reliability, maintainability, and lifecycle cost.
Hunan Durafort Pumps, a professional Chinese pump manufacturer, has engineered the XSP series specifically for permanent, 24/7 pumping station duty, offering full customization in performance, metallurgy, and dimensional interchangeability to serve global EPC contractors, water utilities, and industrial end-users.
XSP Axially Split Volute Casing Pump – Key Technical Parameters
Engineered to cover both standard and large-scale pumping station requirements, the XSP series delivers stable, high-efficiency hydraulic performance:
- Flow rate: 135 – 38,000 m³/h
- Head: 12 – 205 m
- Rotational speed: 750 – 2,970 rpm
- Maximum operating temperature: Up to 200°C
- Peak hydraulic efficiency: Up to 93%
- Design: Single-stage, double-suction, between-bearing, axially split volute casing
- Duty cycle: 24/7 continuous, low vibration, balanced axial thrust from double-suction impeller design
Full Material Customization for Diverse Pumping Station Fluids
Different pumping stations handle different media—raw river water, seawater, corrosive wastewater, industrial process water, or clean municipal water. The Durafort XSP series supports comprehensive material selection:
- General fresh water / utility water: Carbon steel, ductile iron
- Clean water / mild corrosion: SS304, SS316L stainless steel
- Seawater, brine, desalination: Duplex SS2205, Super Duplex SS2507, 904L, CD4MCu
- Highly corrosive seawater / chemical wastewater: Titanium alloy
All castings and wetted parts are precision-cast and dynamically balanced to ensure extended service life in harsh outdoor and underground pumping station environments.
5 Key Advantages of XSP Axially Split Volute Pumps for Pumping Stations
1. Minimized Maintenance Downtime
The axial split casing design allows upper casing removal for impeller, seal, and bearing inspection without disturbing piping or motor alignment. Maintenance teams can complete overhauls in 60% less time compared to vertical turbine or end-suction pumps—critical for water plants where extended shutdowns are unacceptable.
2. Industry-Leading Energy Efficiency
At 93% peak hydraulic efficiency, the XSP series significantly reduces electricity consumption—the largest operating cost for any pumping station. For municipal supply, power plant cooling, or large irrigation projects, long-term energy savings rapidly recover the initial capital investment.
3. Customizable & Fully Interchangeable with International Brands
Durafort engineering team customizes flow, head, materials, and footprint to match existing station foundations. Moreover, XSP pumps are designed as direct drop-in replacements for split case pumps from major global manufacturers—eliminating expensive OEM spare parts and simplifying aging station upgrades.
4. Stable, Low-Vibration Operation for 24/7 Duty
The double-suction impeller inherently balances axial thrust, minimizing bearing wear and vibration. Heavy-duty bearing housings and thick-section volute casings withstand fluctuating water levels common at raw water intakes, flood control stations, and canal lift stations.
5. Broad Temperature & Medium Compatibility
From ambient-temperature municipal water to 200°C industrial hot water, and from seawater desalination to corrosive chemical wastewater, the XSP series covers diverse medium requirements without the need for model changes.
Primary Pumping Station Applications for Axially Split Volute Casing Pumps
XSP horizontal split case pumps serve as core equipment across seven major sectors:
1. Municipal Water & Wastewater Pumping Stations
Raw water intake, urban distribution booster stations, sewage lift stations, wastewater treatment circulation, and regional water transfer pipelines—the single largest global application for axially split volute pumps.
2. Power Generation Cooling Pump Stations
Tuần hoàn nước làm mát, condenser service, and auxiliary cooling for thermal, nuclear, and combined-cycle power plants. Large-flow XSP pumps ensure stable cooling for generator units.
3. Data Center & Commercial HVAC Pump Stations
Chilled water circulation, heating loops, and condenser water systems for hyperscale data centers, airports, hospitals, and high-rise complexes. Low noise and high efficiency meet indoor installation requirements.
4. Marine & Shipboard Pump Stations
Ballast pumping, engine cooling, fire-fighting, and bilge transfer systems. Duplex stainless steel XSP pumps resist saltwater corrosion in offshore and coastal applications.
5. Industrial Manufacturing Process Pump Stations
Paper mill process water, steel mill descaling cooling, chemical plant corrosive fluid transfer, and general high-flow process supply. Custom alloys handle aggressive industrial fluids.
6. Agriculture & Flood Control Irrigation Pumping Stations
Center pivot irrigation, river canal lift stations, and emergency flood discharge. High-capacity XSP pumps deliver massive water volumes for farmland and regional drainage.
7. Fire Protection Pump Stations
NFPA-compliant fire pump systems for refineries, warehouses, high-rise buildings, and chemical parks. Certified XSP pumps provide reliable high-pressure water supply for fire suppression.
Why Choose Hunan Durafort XSP Axially Split Volute Pumps for Your Pumping Station Project?
Hunan Durafort Pumps is a China-based professional industrial pump manufacturer with fully integrated R&D, casting, machining, and testing facilities. Our core strengths include:
- Complete product portfolio – XSP horizontal split case, LC vertical turbine, HD vertical mixed flow, và ZLB vertical axial flow pumps for full station equipment matching.
- Full material flexibility – From cast iron to titanium alloy, supporting seawater, chemical, high-temperature, and clean water projects.
- In-house hydraulic performance testing – Every pump is test-verified to guarantee published flow, head, and efficiency data.
- Custom engineering services – For both new station construction and existing station retrofits.
- Direct factory pricing – No intermediaries, ensuring competitive bulk order pricing.
- Global after-sales support – Technical assistance, spare parts supply, and on-site installation guidance available.
- Interchangeable replacement design – Directly replaces international brand split case pumps, significantly reducing procurement costs.
Frequently Asked Questions for Pumping Station Buyers & Engineers
Q1: Axially split volute pump vs. vertical turbine pump – which is better for pumping stations?
Axially split volute pumps offer higher maximum flow, simpler maintenance, and lower overhaul costs—ideal for ground-level, large-capacity stations. Vertical turbine pumps are better suited for deep-well intakes where floor space is limited. Most large municipal water supply stations choose XSP axially split volute pumps as their primary circulators.
Q2: Can Durafort XSP pumps replace old international brand split case pumps without modifying foundations?
Yes. Our engineering team customizes casing dimensions, flange positions, shaft length, and mounting footprints to match your existing pump foundation, enabling a direct drop-in replacement—no concrete base reconstruction required.
Q3: What material is recommended for seawater intake pumping stations?
For coastal raw seawater stations, we recommend Căn hộ hai tầng SS2205 or Super Duplex SS2507 for wetted parts. For high-chloride concentrated brine or desalination services, 904L or Titanium alloy provides optimal corrosion resistance.
Q4: What is the expected service life of XSP pumps in municipal water stations?
With routine scheduled maintenance, ductile iron/SS304 XSP pumps typically achieve 10–15 years in clean municipal water service. Duplex alloy models in seawater applications provide 8–12 years of stable operation.
Kết luận
Axially split volute casing pumps—epitomized by the Durafort XSP horizontal double-suction split case series—remain the most reliable, cost-effective core pumping equipment for water pumping stations worldwide. With high flow capacity, ultra-high efficiency, easy maintenance, and full material customization, the XSP series meets the demanding requirements of municipal, power, data center, irrigation, and industrial projects alike.
Whether you are planning a new pumping station or upgrading an existing one, contact our engineering team today for customized performance curves, material selection guidance, and a factory-direct quotation.
