- Simple construction to minimize dimensions and reduce investment and maintenance costs
- High-quality investment cast impellers and diffusers for improved efficiency
- Fast and easy impeller mounting
- Bearing unit can be serviced without having to disassemble the pumps
- Wide range of materials available including duplex stainless steel grades
MBN high-pressure stage casing pumps
Multi-purpose solutions for all high-pressure needs
The MBN pumps are ideal for use in high-pressure applications. They have a big variety of nozzle position options, thus providing flexibility during installation and simplifying the piping design. The thrust bearing and shaft seal can be easily exchanged without disassembling the suction casing.
- Boiler feed duties in industrial power applications up to 180° C
- Condensate service in power stations and industrial plants
- Feed pumps in desalination by reverse osmosis
- Shower water in paper mills
- High-pressure water in general industry
Main design features
- Integrated diffusers and stage casings
- Product-lubricated Non-Drive End (NDE) bearing of innovative design for better internal alignment and lubrication
- Balance drum and axial thrust bearing
- Keyless polygon shaft torque transmission for the impellers
- Shaft sealing only required in the low-pressure suction side
Key characteristics
Capacities | Up to 700 m3/h / 3,080 US gpm |
Heads | Up to 900 m / 2,950 ft |
Pressures | Up to 100 bar / 1,450 psi |
Temperatures | Up to 180°C / 355°F |
Discharge sizes | Up to 150 mm / 6 inches |
Performance range
Performance range 50 Hz
Performance range 60 Hz


Documents
Brochures
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MBN-RO Multistage Ring Section PumpspdfLanguages:
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Cast MaterialspdfLanguages:
Case studies
Applications
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Bio-based process developmentFind and develop efficient process equipment for bio-based products in an agile way with Sulzer as your trusted partner.
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Boiler feed pump (BFP) for biomass wasteBoiler feed pumps for biomass firing power plants applications are typically small/medium ring section type. Axially split multistage pumps are also available when required. The pump size and the design pressure will depend very much of type and the output of the power plant.
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Brine re-injection pumpThe brine re-injection pump re-injects the low enthalpy reject brine back to the geothermal field to renew the available resources.
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Cellulose-based bioproductsExplore different ways cellulose-based bioproducts can be industrially processed. Sulzer employs and develops multiple application technologies for various feedstocks.
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Chemical recoverySulzer’s extensive product portfolio is designed to meet the most demanding hydraulic coverage requirements in your evaporation, recovery boiler, and white liquor preparation processes.
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Feed water pumps for solar power generationFeed water pumps (FWP) pump feed water from the de-aerator through the HP heaters to the solar steam generator. The major characteristic of FWP is their high differential head. The FWP are usually horizontal ring section type, but depending on customer requirements, they can also be barrel or axially split type.
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Foam formingWe provide advanced equipment for executing and developing sustainable foam forming applications for wood, pulp, textiles, and bio-based products.
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Lithium applicationsWith a comprehensive global reference base, broad range of reliable pumps and other process equipment and full line of lifecycle services Sulzer is the chosen equipment supplier for lithium processing. Our equipment is constantly developed for more efficient extraction and production of lithium-based compounds like lithium carbonate, lithium hydroxide, and lithium chloride.
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Mechanical pulp lineSulzer’s ideal product portfolio for challenging pumping, agitation, and mixing operations in refining, grinding, CTMP, screening, reject handling, and bleaching processes.
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Microfibrillated celluloseWe are actively involved in developing process equipment for microfibrillated cellulose. Our broad portfolio of industrial pumps, agitators, and mixers suit the specific needs of MFC.
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Mine water managementSulzer offers a comprehensive portfolio of pumps and process equipment for abrasive and corrosive environments in mine water management applications.
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Paper and board machine and systemsSulzer’s extensive product portfolio is designed to meet the most demanding hydraulic coverage requirements and for all types of liquids, making it ideal for challenging pumping, agitation, and mixing operations in stock preparation, PM approach system, broke system, white water system, vacuum system, condensate system, and shower water system processes.
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Power plantsSulzer’s extensive product portfolio to maximize the performance and reliability of your solid organic fuel biomass power plant, solid industrial or municipal waste fuel biomass power plant, and liquid or gaseous organic fuel biomass power plant processes.
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Pulp drying machineIncreased hydraulic excellence for your approach, cleaning, drying machine, vacuum, broke, and white water system processes.
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RO-island HPPThis is the heart of the SWRO Desalination process, where the desalination effect takes place. The Treated sea water is fed by means of the High Pressure pumps into the RO membranes, obtaining permeate or product water and high pressure brine rejection, whose high pressure energy is recovered by selected Energy Recovery Device.
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RO-Island HPP 2nd passThis is the heart of the SWRO desalination process, where the desalination effect takes place. The treated sea water is fed by means of the high pressure pumps into the RO membranes, obtaining permeate or product water and high pressure brine rejection, whose high pressure energy is recovered by selected Energy Recovery Device.
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Separation applicationsWe are a forerunner in the development of mechanical separation applications for bio-based raw materials. Our solutions produce ingredients in a very pure form, suitable for further processing.
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Test equipment rentalRental equipment for textile and bio-based process development initiatives either at customer facilities or Sulzer’s development center.
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Water supplyMeeting today’s challenges and high requirements within water intake, sedimentation, sludge treatment, fine screening, and water distribution processes.
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Water transportationWater transport pumps are pumping large volumes of water over mostly long distances and high geodetic heights to geographical areas or industries where it is required for different purposes. We offer various configurations according to your needs.
Related Links
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MC high pressure stage casing pumpM-series pumps have a modular design thus allowing Sulzer to find the most efficient solution to meet customer requirements.
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MD high-pressure stage casing pumpBoth investment costs and lifecycle costs are taken into consideration when designing the optimum possible pump as an optimized hydraulic design guarantees maximum efficiency.
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Original pump spare partsOriginal spare parts machined to the correct tolerances and clearances give a perfect fit first time, every time. Our commitment to continuous improvement often allows us to supply parts with improved features, thus enhancing performance, extending equipment life, while reducing maintenance costs.
Talk or write to our experts to find your best solution.