Marine Vertical Centrifugal Pumps
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Marine Vertical Centrifugal PumpsHeavy-Duty Maritime Engineering | Space-Saving Inline Design | Classification Society Certified Engineered in full accordance with ISO 2858 and EN 733 dimensional specifications, the FILIPUSI marine vertical inline pump provides exceptionally versatile seawater transfer performance. Featuring an advanced back pull-out modular design, it empowers vessel operators to service rotating assemblies effortlessly while keeping pipe network connections intact. With flows from 5 to 1,200 m³/h and heads up to 150 meters, the marine vertical series is the workhorse choice for seawater cooling, ballast transfer, HVAC circulation, and general service water aboard commercial vessels, offshore platforms, and floating production facilities worldwide.
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Performance Advantages & Engineering Highlights
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Maritime Class Compliance Designed and documented to meet ABS, BV, CCS, DNV, GL, LR, and NK classification society requirements. Full material test reports and third-party inspection certificates provided for classified vessel installations. |
Streamlined Serviceability The back pull-out configuration allows complete removal of the rotating assembly without disconnecting suction/discharge piping, reducing typical seal replacement time to under 2 hours and minimizing vessel downtime. |
Corrosion-Resistant Metallurgy Precision-cast Nickel-Aluminum Bronze, Duplex 2205, or Super Duplex 2507 wetted components resist chloride pitting, cavitation erosion, and marine biofouling in continuous raw seawater service. |
Operational Principle & Structural Characteristics
Driven by an electric motor at standard marine speeds (2900 rpm at 50Hz / 3500 rpm at 60Hz), the pump shaft spins the dynamic impeller to draw fluid along the axial suction center. Centrifugal acceleration propels the liquid outward into the volute casing, smoothly converting kinetic velocity into pressurized discharge. The inline design aligns suction and discharge flanges on the same centerline, allowing direct valve-like pipeline mounting and eliminating the need for concrete inertia bases in the engine room.
| • | Vertical Inline Topology: Suction and discharge flanges aligned on the same centerline provide stable fluid intake and uniform pressure development while saving up to 60% engine room floor space compared to horizontal pumps. |
| • | Marine-Grade Mechanical Sealing: Outfitted with high-grade wear-resistant mechanical seals (cartridge type, silicon carbide faces standard) to ensure zero leakage and prolonged continuous duty in seawater service. |
| • | Back Pull-Out Assembly: Complete rotating assembly (motor, shaft, impeller, mechanical seal) can be extracted without disconnecting suction or discharge piping, reducing maintenance downtime by up to 60%. |
| • | Corrosion-Resistant Metallurgy: Options include Nickel-Aluminum Bronze (C95800), Duplex 2205, Super Duplex 2507, and AISI 316L stainless steel tailored for raw seawater, ballast water treatment, and SWRO desalination feed service. |
| • | Marine-Duty Motor: IP56 protection, Class F/H insulation, and reinforced windings for engine room environments. Explosion-proof (ExdIIBT4) options available for hazardous area zones on offshore platforms. |
Performance & Hydraulic Curves
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General Technical Parameters
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Engineering Specification
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Operational Capability
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Tailored Engineering Options
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Volumetric Flow Rate (Q)
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5 – 800 m³/h
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Up to 1,200 m³/h customized for high-flow ballast service
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Total Dynamic Head (H)
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10 – 90 meters
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Up to 150 meters high-pressure customized volute casing
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Motor Power Range
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1.5 kW – 200 kW
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IE2/IE3 premium efficiency, explosion-proof (ExdIIBT4) for offshore hazardous zones
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Inlet / Outlet Size
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DN32 – DN300
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DIN / ANSI / JIS marine flange standards on request
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Fluid Temperature Range
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-15°C to +80°C (standard seawater)
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Up to +140°C with high-temp mechanical seals and cooling jacket (boiler feed / thermal oil)
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Structural Metallurgy
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Ductile Iron / Nickel-Aluminum Bronze (C95800)
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Duplex 2205 / Super Duplex 2507 / AISI 316L / SEBF epoxy coating options
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Pressure Rating
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PN10 / PN16 (standard)
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PN25 / PN40 high-pressure casings for SWRO feed service
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Electrical Drive
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380V / 50Hz, 3-phase (Standard IP56 Class F)
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440V / 60Hz, 415V / 50Hz, 220V / 440V dual voltage, VFD-ready
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Mechanical Seal
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Cartridge type (silicon carbide faces, standard)
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Double mechanical seals, flush plans (Plan 11/21/32) for hazardous fluids
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Certifications
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CE, ISO 9001:2015
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ABS / BV / CCS / DNV / GL / LR / NK marine classification on request
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Key Applications & Industry Use Cases
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Seawater Cooling Systems Raw seawater circulation through main engine cooling jackets, auxiliary machinery, HVAC condensers, and refrigeration systems aboard commercial cargo vessels, tankers, container ships, and passenger ferries. Nickel-Aluminum Bronze construction provides reliable 24/7 cooling service with minimal maintenance and maximum resistance to chloride pitting and marine biofouling. |
Ballast Water Transfer & Treatment High-flow models up to 1,200 m³/h enable rapid ballast operations in port, complying with IMO Ballast Water Management Convention requirements. Duplex 2205 construction recommended for BWTS feed service where disinfection chemicals (chlorine, UV, ozone) increase corrosivity. The inline design fits easily in compact ballast pump rooms. |
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Shipboard HVAC & Chilled Water Chilled and hot water circulation for passenger vessels, cruise ships, and offshore accommodation modules requiring reliable crew and passenger comfort. The low-vibration inline design ensures quiet operation in passenger areas, while the back pull-out design allows maintenance without disrupting piping. AISI 316L or ductile iron sufficient for closed-loop freshwater HVAC systems. |
Fire Fighting & General Service Configurable as fire pumps with appropriate pressure ratings and SOLAS certification. Optional self-priming capability ensures rapid response to fire emergencies. Also handles deck washdown, sanitary water supply, and bilge stripping. The compact vertical design allows installation in cramped pump rooms where floor space is at a premium. |
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SWRO Desalination Feed High-pressure models deliver 40-70 bar for SWRO reverse osmosis membrane feed aboard large passenger vessels, offshore platforms, and naval vessels producing freshwater onboard. Super Duplex 2507 construction provides maximum resistance to chloride corrosion at high pressures. For more information, see our dedicated Seawater Desalination Pumps page. |
Offshore Platform & FPSO Service Super Duplex 2507 construction withstands extreme salinity, structural vibration, and limited maintenance access on offshore oil rigs, FPSO units, and offshore wind substations. Explosion-proof motor options available for hazardous area zones (Zone 1/Zone 2). The compact inline design is ideal for installation in cramped offshore module spaces. |
How to Select the Right Marine Vertical Pump Model
With over 50 standard configurations available, selecting the correct marine vertical pump requires matching five core parameters to your vessel system requirements:
| 01 | Required Flow Rate (Q): Determine the maximum and minimum flow your system demands. The marine vertical series covers 5 to 1,200 m³/h. Select a pump that operates at or near its Best Efficiency Point (BEP) at your design flow — running continuously below 50% of BEP causes recirculation, cavitation, and premature seal failure. |
| 02 | Total Dynamic Head (TDH): Calculate total head including static elevation, friction loss in piping and fittings, and required terminal pressure. For seawater cooling, account for increased friction due to higher seawater density (1.025 g/cm³) and potential biofouling over time. The marine vertical series delivers heads up to 150m. |
| 03 | Fluid Properties & Material: Raw seawater cooling and ballast service = Nickel-Aluminum Bronze (C95800). Ballast water treatment and SWRO feed = Duplex 2205 or Super Duplex 2507. Freshwater HVAC loops = AISI 316L. For fluids above 80°C, specify high-temperature mechanical seals with a cooling jacket. |
| 04 | Classification Society & Flag State: Specify your vessel's classification society (ABS, BV, CCS, DNV, GL, LR, NK) and flag state at order time so we can provide the correct type approval documentation, material test reports (MTR), and third-party inspection certificates required for classified vessel installations. |
| 05 | Electrical Compatibility: Confirm vessel's electrical system voltage and frequency (380V/50Hz, 440V/60Hz, 415V/50Hz). All pumps available with marine-duty motors (IP56, Class F/H insulation). For variable speed operation, specify VFD-compatible motors with reinforced insulation. For offshore hazardous areas, specify explosion-proof (ExdIIBT4) motors. |
Need help selecting? FILIPUSI marine engineers provide free pump selection services. Send us your required flow, head, fluid properties, vessel classification society, and electrical specifications, and we will recommend the optimal marine vertical model with a full performance curve and dimensional drawing within 24 hours.
Marine Vertical Centrifugal Pumps - Frequently Asked Questions
Q1: What materials are recommended for continuous raw seawater service?
A1: For continuous raw seawater cooling and ballast service, Nickel-Aluminum Bronze (C95800) is the industry standard due to its excellent resistance to chloride pitting, cavitation erosion, and marine biofouling. For more demanding applications such as ballast water treatment feed or SWRO desalination, we recommend Duplex Stainless Steel 2205 or Super Duplex 2507 for enhanced corrosion resistance. AISI 316L is suitable for freshwater HVAC loops but not recommended for continuous raw seawater service above 35°C.
Q2: What marine classification society certifications do you offer?
A2: FILIPUSI marine vertical pumps can be supplied with documentation and certification from all major classification societies, including ABS (American Bureau of Shipping), BV (Bureau Veritas), CCS (China Classification Society), DNV (Det Norske Veritas), GL (Germanischer Lloyd), LR (Lloyd's Register), and NK (Nippon Kaiji Kyokai). We provide full type approval documentation, material test reports (MTR), hydrostatic test reports, and third-party inspection certificates as required by the vessel's flag state.
Q3: Can you provide custom dimensions for vessel retrofitting projects?
A3: Yes. FILIPUSI specializes in custom-engineered marine pumps for vessel retrofitting and fleet modernization. We can manufacture pumps with custom flange-to-flange dimensions, shaft heights, and baseplate mounting patterns to match existing engine room boundaries and legacy flanges, enabling drop-in replacement of aging equipment without pipe modification. Send us your existing pump dimensions or GA drawing, and our engineers will provide a custom proposal within 24 hours.
Q4: What is the typical lead time for marine vertical centrifugal pumps?
A4: Standard configuration pumps with ductile iron or bronze construction typically have a lead time of 15-25 working days. Pumps with Duplex or Super Duplex stainless steel construction require 30-45 working days due to longer casting and machining times. Pumps requiring classification society third-party inspection add 5-10 working days for surveyor scheduling and documentation. Custom dimension pumps may require additional time for pattern modification. Rush orders can be accommodated on a case-by-case basis.
Q5: How do I select the correct pump size for my vessel's cooling system?
A5: Selecting the correct pump size requires calculating your system's required flow rate (Q) and total dynamic head (TDH). For seawater cooling systems, the flow rate is determined by the total heat load of all cooled equipment (main engine, auxiliary engines, HVAC, etc.) divided by the allowable temperature rise across the coolers. The TDH includes static elevation, friction loss in piping and heat exchangers, and required terminal pressure. We recommend selecting a pump that operates at 80-110% of its Best Efficiency Point (BEP) at design flow.
Q6: Do you provide spare parts and after-sales technical support?
A6: Yes. FILIPUSI provides comprehensive after-sales support for all marine vertical pump models. We maintain an inventory of OEM spare parts including mechanical seal cartridges, bearing sets, impellers, wear rings, shaft sleeves, O-rings, and gaskets. Spare part kits can be shipped within 3-5 working days for standard models. Our engineering team provides remote technical support via email, WhatsApp, and video call for installation guidance, troubleshooting, and maintenance advice. For large fleet operators, we can offer customized spare part packages and annual maintenance contracts.
Need Custom Marine Pumping Solutions?
FILIPUSI delivers tailored OEM/ODM marine pump manufacturing—offering precise hydraulic selection, specialized corrosion-resistant materials, classification society documentation, and complete skid-mounted pump packages for worldwide shipyards, vessel operators, and offshore contractors.
Marine Pump Manufacturer & Exporter | www.filipusi.com
Related Marine Pump Series & Categories
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Marine End Suction Pumps Horizontal back pull-out design for high-flow seawater cooling and ballast service. Flows up to 2,000 m³/h. Ideal for large vessels with ample engine room space. |
Marine Double Suction Pumps Axially split case design for very high-flow ballast transfer and seawater circulation. Flows up to 20,000 m³/h. Bronze and Duplex stainless steel construction. |
Seawater Desalination Pumps High-pressure multistage pumps for SWRO reverse osmosis feed. Pressures up to 80 bar, Super Duplex 2507 construction. Ideal for shipboard freshwater production. |
Other categories: Horizontal End Suction Centrifugal Pumps | Vertical Inline Centrifugal Pumps | High-Pressure Multistage Pumps | Double Suction Split Case Pumps
| Product Number | Product model | Flow | Head | Motor power | Voltage | Frequency(f) | Inlet diameter | Outlet diameter | Material | Mechanical seal sealing | Weight(kg) |
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