Boiler feed water and booster pumps

Feedwater pump for high differential heads

Feed water pumps (FWP) pump the feed water from the de-aerator through the HP heaters to the boiler. The major characteristic of FWP is their high differential head. In medium to large size coal- and oil-fired power plants, the main FWP are horizontal barrel type while booster pumps are horizontal single stage double suction type. In small coal and oil captive power plants, the main FWP could be also horizontal ring section or axially split type and the booster pumps horizontaly single stage end suction type.

Feedwater pump for coal and oil-fired processes
Sulzer provides the following barrel casing as well as ring section and axially split pumps as main feed water pumps for coal- and oil-fired power plants:




Up to 4,000 m3/h / 
17,600 USgpm
Up to 900 m3/h /
4,600 USgpm
Up to 1,000 m3/h / 
4,400 USgpm


Up to 4,200 m / 13,800 ft Up to 2,600 m / 10,000 ft Up to 4,000 m / 13,120 ft


Up to 545 bar / 7,905 psi Up to 300 bar / 4,500 psi Up to 425 bar / 6250 psi


Up to 220°C / 430°F Up to 425°C / 800°F Up to 425°C / 800°F





Up to 1,750 m3/h / 
7,700 USgpm
Up to 1,200 m3/h / 
5,300 USgpm
Up to 3,200 m3/h / 
14,000 USgpm


Up to 4,000 m / 13,120 ft Up to 2,800 m / 9,200 ft Up to 2,900 m / 9,500 ft


Up to 430 bar / 6,240 psi Up to 350 bar / 5080 psi Up to 300 bar / 4,400 psi


Up to 220°C / 430°F Up to 210°C / 410°F Up to 200°C / 400°F




Up to 5,500 m3/h / 
29,000 USgpm
Up to 2,600 m3/h / 
11,440 USgpm


Up to 340 m / 1,115 ft Up to 300 m / 1,000 ft


Up to 48 bar / 700 psi Up to 100 bar / 1,450 psi


Up to 220°C / 428°F Up to 425°C / 800°F


  • CP horizontal radially split multistage barrel pump
    CP ISO 13709 / API 610 Type BB5 radially split barrel casing pumps are used in both high-pressure oil production and high-temperature refinery applications.

  • Greater need for energy
    Cities across the globe are the largest consumer of energy. Such rapid urbanization means an exponential increase in global energy needs. These demands need to be met. Sulzer is ready to help you, the power plant operators, rise to this ever-important challenge in the most eco-efficient way possible.

  • GSG diffuser style barrel pump
    The GSG pump is the least costly form of ISO 13709 / API 610 Type BB5 high-pressure barrel pumps. The GSG back-to-back rotor stack is supplied on low- density services where rotor stability is critical.

  • HPT high pressure barrel casing pump
    The HPT is a pump specifically designed for boiler feed applications in thermal power stations. The pumps are optimized to provide high-efficiency operation over an extended period of time, thus reducing operating and maintenance costs.

  • HZB double suction volute pump
    The HZB is a horizontal, radially split, single stage, double suction, centerline mounted pump. The HZB pumps are ideal for use in arduous industrial applications for handling clean, cold or hot liquids as well as for safety-related services in nuclear power stations.

  • MD high pressure stage casing pump
    Both investment costs and lifecycle costs are taken into consideration when designing the optimum possible pump as an optimized hydraulic design guarantees maximum efficiency.

  • ME high pressure ring section pump
    Our ME pumps are specifically designed for boiler feed applications in thermal power stations.

  • MSD axially split multistage pump
    The MSD pump has the broadest hydraulic coverage of any BB3 type multistage pump in the market. There are over 10 000 MSD pumps installed in product pipelines, boiler feed, water injection and even nuclear safety-related services around the globe.

  • ZE/ZF end suction pump range
    The ZE/ZF are ideal pumps for arduous industrial applications handling clean, cold or hot liquids, including hydrocarbons and light chemicals.

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