Multistage Pumps
Featured Multistage Centrifugal Pumps |
FILIPUSI manufactures and exports heavy-duty multistage centrifugal pumps engineered for high dynamic heads up to 1,800m. Delivered with modular ring-section and compact vertical inline architectures for power generation, mining, municipal water supply, process industries, and water treatment plants worldwide.
Designed to achieve peak dynamic heads through stage-by-stage pressure accumulation, these pumps deliver continuous 24/7 reliability while eliminating severe cavitation and excessive energy loss in high-demand industrial fluid networks. Available in both horizontal segmental (ring-section) and vertical inline configurations to match your footprint and piping layout requirements.
Applicable to: Municipal & High-Rise Water Boosting, Mining Dewatering & Tunneling, Industrial Water Treatment & RO Filtration, HVAC & District Energy, High-Pressure Washdown, Boiler Feed Systems, and SWRO Seawater Desalination.
Multistage Pump Series & Configurations
FILIPUSI offers two primary multistage pump architectures to match your application requirements:
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VS Series — Vertical Inline Multistage Compact vertical inline design with all-stainless-steel wet ends. Flows 0.4-270 m³/h, heads up to 350m. Ideal for water boosting, HVAC, RO feed, and boiler feed in space-constrained installations. 214 standard configurations | DN25-DN200 | AISI 304/316/Duplex |
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Horizontal Ring-Section Multistage Heavy-duty horizontal segmental ring-section design for ultra-high heads up to 1,800m. Flows 1-1,350 m³/h. Ideal for boiler feed, SWRO desalination, mining dewatering, and high-pressure industrial processes. Balance disc/drum design | DN50-DN300 | Cast Iron/SS/Duplex/Alloy |
| Parameter / Engineering Metric | Technical Specification & Design Limit |
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| Volumetric Flow (Q) | 1 to 1,350 m³/h (Standard inventory: 5 to 500 m³/h at BEP) |
| Discharge Head (H) | 10 to 1,800 meters (Standard inventory: 50 to 1,000m) |
| Thermal Operating Band | -20°C to +250°C (Extended with cooling jackets for thermal feed) |
| Axial Thrust Control | Automatic hydraulic balance disks/drums (neutralizes up to 95% load) |
| Material Selection | Cast Iron, SS304/SS316, Duplex 2205, Super Duplex 2507, Hardened Alloys |
| VFD Automation Integration | VFD & PLC Ready (Modbus / BACnet standard protocols) |
Compliant with ISO 9001, CE standards, and industrial manufacturing specifications. All pumps undergo 100% hydrostatic pressure testing before shipment.
Core Advantages & Engineering Features
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Stage-by-Stage Pressure Generates ultra-high head pressure through consecutive impellers on a single shaft, avoiding cavitation and energy loss of high-speed single-stage pumps. |
Modular Adaptability Segmental ring-section design allows precise customization of stage counts, enabling operation at Best Efficiency Point (BEP) for specific system duty points. |
Axial Thrust Balance Automatic hydraulic balance disks/drums neutralize up to 95% of axial loads, significantly extending mechanical seal and bearing operational lifespans. |
Energy Efficiency Precision-cast hydraulics and optimized fluid channels ensure maximum energy conversion, reducing power consumption during continuous 24/7 industrial operations. |
Key Industries & Applications
• Boiler Feed & Power Generation: High-pressure feedwater delivery for steam boilers in power plants, cogeneration facilities, and industrial process steam systems. Heads up to 1,800m with balance disc design for continuous 24/7 operation.
• SWRO Seawater Desalination: High-pressure feed pumps for reverse osmosis desalination plants. Super Duplex 2507 construction withstands 60-80 bar operating pressures in raw seawater service.
• Mining Dewatering & Tunneling: High-head dewatering pumps for underground mines, tunnel construction, and quarry operations. Hardened alloy impellers resist abrasive wear from slurry and solids.
• Municipal & High-Rise Water Boosting: Vertical inline multistage pumps for water supply in high-rise buildings, hotels, hospitals, and municipal distribution networks. VFD control saves 30-50% energy.
• Industrial Water Treatment & RO Filtration: Feed pressure for ultrafiltration, nanofiltration, and reverse osmosis systems in food & beverage, pharmaceutical, and semiconductor manufacturing.
• HVAC & District Energy: High-rise building HVAC circulation, district heating and cooling networks, and geothermal heat distribution loops.
Certifications & Quality Assurance
Selection Guide & FAQ
Q1: When should a project specify a multistage centrifugal pump instead of a single-stage pump?
A1: Multistage pumps are required when system dynamic head requirements exceed 160m or when high pressure must be generated efficiently without running single impellers at destructively high speeds. They provide smooth, stage-by-stage pressure buildup with higher energy efficiency and lower risk of cavitation.
Q2: How does the balance disc/drum mechanism prevent premature bearing failure in high-head applications?
A2: In high-pressure multistage pumps, cumulative axial thrust can reach several tons. FILIPUSI's automatic balance system continuously counters this axial force hydraulically using discharge pressure, neutralizing up to 95% of the thrust load and greatly extending bearing and seal service life.
Q3: What is the difference between vertical inline and horizontal ring-section multistage pumps?
A3: Vertical inline multistage pumps (VS series) are compact, all-stainless-steel, and install directly into pipelines like a valve, saving up to 50% floor space. They are ideal for flows up to 270 m³/h and heads up to 350m. Horizontal ring-section pumps handle much higher flows (up to 1,350 m³/h) and heads (up to 1,800m), and are preferred for boiler feed, SWRO, and mining applications.
Q4: What materials are recommended for SWRO seawater desalination service?
A4: For SWRO high-pressure feed service (60-80 bar), we recommend Super Duplex Stainless Steel 2507 for all wetted components, with Duplex 2205 as a cost-effective alternative for lower-pressure stages. Silicon carbide mechanical seals with Viton elastomers are standard. All materials come with MTR 3.1 test reports.
Q5: Can multistage pumps be operated with variable frequency drives (VFD)?
A5: Yes. All FILIPUSI multistage pumps are VFD-compatible, allowing precise flow and pressure control while reducing energy consumption by 30-50% compared to fixed-speed operation. Standard Modbus and BACnet protocol support enables seamless integration into building management systems (BMS) and industrial automation networks.
Expert Support: FILIPUSI's engineering division employs advanced computational fluid dynamics (CFD) to match stage counts and material metallurgy strictly to your site system curve and NPSHa requirements. Contact us to get tailored hydraulic selection proposals & engineering drawings within 24 hours.
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