Horizontal & Vertical Split Case Double Suction Centrifugal Pump Large Flow Pump For Municipal & District Heating
1. Product Overview
Horizontal split case pump & vertical split case pump are single/two-stage double suction double volute large-flow centrifugal pumps with axially split casing. The core merit is that maintenance can be done without removing pipes or motor. Hydraulic components optimized via CFD simulation with wide high-efficiency operating range, low rated NPSHr 2~5m for excellent anti-cavitation performance. Max flow up to 15000m³/h, max head 250m, liquid temperature 0~120℃, max working pressure 25bar, motor power 1.1~2240kW. Five standard factory assembly types available. Standard cast iron casing with stainless impeller, ductile iron & duplex stainless customized for corrosive water. Widely applied in municipal water, district energy, commercial HVAC, agricultural irrigation, desalination & industrial cooling.
Comparison: Horizontal VS Vertical Split Case Pump
Comparison Item | Horizontal Split Case Pump | Vertical Split Case Pump |
|---|---|---|
Mounting Structure | Horizontal base, long coupled motor | Vertical floor-mounted, save floor space |
Inlet & Outlet Layout | Horizontal inline straight | Horizontal ports, vertical pump body |
Suitable Machine Room | Spacious new water plant with high ceiling | Narrow retrofitted plant with limited height |
Main Assembly Types | Complete set with base, split base unit | Bare pump with base, base-free customized |
Vibration Performance | Damped base, stable running | Vertical force, smaller radial vibration |
Typical Application | Municipal water plant, district heating main pump | Mall HVAC, park secondary circulation pump |
General Technical Specifications
Category | Item | Standard Parameter |
|---|---|---|
Hydraulic Performance | Pump Structure | Single / Two-stage double suction double volute centrifugal pump |
Max Flow Rate | 15000 m³/h | |
Max Head | 250 m | |
Rated NPSHr | 2 ~ 5 m | |
Liquid Temp Range | 0 ~ 120 ℃ | |
Max Working Pressure | 25 bar | |
Motor Power Range | 1.1 ~ 2240 kW | |
Hydraulic Design | CFD optimized impeller, high efficiency within ±20% flow deviation | |
Mechanical Structure | Casing Type | Axial split top & bottom casing |
Standard Material | Cast iron casing, stainless steel impeller | |
Custom Material | Ductile iron, duplex stainless steel casing & impeller | |
Shaft Seal Options | Mechanical seal, graphite packing seal | |
Compliance Standard | ISO5199; impeller dynamic balance ISO1940 G6.3 | |
Flange Standard | DIN EN1092 |
Five Standard Factory Assembly Versions
Assembly Type | Configuration Description | Suitable Projects |
|---|---|---|
Complete unit with standard base | Pump + motor + integrated base full set | New standard water plant construction |
Bare pump with base | Pump only without motor, matched base supplied | Customer self-provide high-power motor |
Base-free bare pump | Pump body only, no base & motor | Replacement on existing foundation |
Split base complete unit | Separate pump & motor base | Heavy high-power unit vibration reduction |
Split base bare pump | Bare pump with separated base | Non-standard plant foundation customization |
2 Eight Core Product Advantages
Axially Split Casing, No Pipe Disassembly For Maintenance Top-bottom split design, inspect impeller, seal & bearing after opening top cover; no need to detach flanges or move motor, greatly shorten downtime for municipal water plant overhaul.
Double Suction & Double Volute Low Vibration Long Service Life Dual inlet balance axial thrust; double volute counteracts radial force, reduce wear of bearing & seal by 60%, bearing rated life up to 50,000 hours.
Wide Range High Hydraulic Efficiency CFD full flow simulation, keep high efficiency even when flow deviates ±20% from rated point, save power for parallel pump stations & variable flow district energy plants.
Ultra Low NPSHr 2~5m, Stable For Surface Water Intake Low cavitation risk for reservoir & river intake pumps, no impeller pitting damage under long-term continuous operation.
Horizontal & Vertical Dual Models Fit All Plant Conditions LS horizontal for spacious new waterworks; LSV vertical save floor space, ideal for narrow old HVAC room renovation.
Custom Anti-Corrosion Materials For Fresh & Seawater Standard cast iron for tap water; ductile iron for industrial softened water; duplex stainless steel for desalination & mildly corrosive liquid. 7 Five Assembly Options Match All Supporting Demands Complete unit, bare pump, split base for new construction, retrofit & customer self-motor projects. 8 Full Power Coverage For Heavy Large-Flow Conditions 1.1kW small circulation up to 2240kW main water plant pump, meet ten-thousand-ton water supply & large district heating station demand.
3 Six Main Application Scenarios
1 Municipal Water Supply: Urban waterworks, reservoir surface intake pump stations;
2 District Energy Plants: Primary & secondary circulation pumps for heating & cooling;
3 Commercial HVAC: Large shopping mall, exhibition & hotel chilled water main circulation;
4 Agricultural Water Conservancy: Farmland irrigation & river diversion booster system;
5 Water Treatment: Desalination, large swimming pool circulation, industrial process cooling pump;
6 Industrial Supporting: Chemical park recirculating water, factory cooling supply.
4 Standard Installation & Maintenance Guide
1 Piping: Install rubber flexible joints at inlet & outlet, keep straight pipe ≥8 times diameter before & after pump;
2 Foundation: Concrete damping base for complete unit, extra vibration pad for high-power models;
3 Seal Selection: Mechanical seal for clean water, packing seal for liquid with sediment;
4 Filtration: Large-flow Y strainer installed at suction side to protect impeller from sand;
5 Maintenance: Open split casing to inspect wear ring & seal regularly, replace bearing grease every 2 years.
