MD high pressure stage casing pump

Customized stage casing pumps with clever modular design

Both investment costs and lifecycle costs are taken into consideration when designing the optimum possible pump as an optimized hydraulic design guarantees maximum efficiency. M-series pumps have a modular design allowing Sulzer to find the most efficient solution to meet customer requirements.

MD High Pressure Stage Casing Pump
Main benefits
  • Modular hydraulics for high efficiency in a wide range of operating conditions
  • Centerline mounted with large branch sizes for optimized inlet flow, low noise level and higher allowable forces and moments
  • Unaffected by rapid temperature variations
  • Stiff shaft design for critical speeds above the maximum operating speed
  • Multiple screws mechanical tensioners are used on large sizes to allow simpler tightening and loosening
Main applications
  • Main boiler feed in captive, independent, combined cycle, concentrated solar, biomass, and industrial power plants
  • Start-up boiler feed in utility thermal power plants
  • High-pressure water in general industry
Main design features
  • Up to four impeller sets per pump size
  • Optimal hydraulic selection to meet exactly the operating data and low Net Positive Suction Head Required (NPSHr)
  • Double suction first-stage impeller available for selected pump sizes
  • Balance drum and axial thrust bearing designed for long life under extreme operating conditions is standard
  • Balance disc is optional
  • Mechanical or magnetic lift-off device is available for frequent start-stop operation
  • Paired, fan-cooled taper roller thrust bearings are standard for balance drum configuration
  • Optional sleeve radial bearings and double acting tilting pad with forced lubrication
Key characteristics
Capacities Up to 1,200 m3/h  /  5,300 US gpm
Heads Up to 2,800 m  /  9,200 ft
Suction pressures Up to 50 bar  /  725 psi
Discharge pressures Up to 350 bar  /  5,080 psi
Temperatures Up to 210 °C  /  410 °F
Discharge sizes Up to 200 mm  /  8 inches
Maximum speed of rotation Up to 4,000 rpm
Performance range
MD performance range 50 Hz
Performance range 50 Hz
MD performance range 60 Hz
Performance range 60 Hz
Applications
  • Boiler feed pump (BFP) for biomass waste
    Boiler 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.

  • Boiler feed water and booster pumps
    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.

  • Feed water pump (FWP) for gas-fired
    Feed water pumps (FWP) pump the feed water from the de-aerator through the HP heaters to the boiler. The major characteristic of the FWP is their high differential head. In all sizes of gas-fired combined-cycle power plants, the FWP are horizontal ring section type; occasionally, they could also be barrel or axially split type.

  • Feed water pumps for solar power generation
    Feed 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.

  • Power plants
    Sulzer’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.
Related links
  • MC high pressure stage casing pump
    M-series pumps have a modular design thus allowing Sulzer to find the most efficient solution to meet customer requirements.

  • MBN multistage ring section pump
    The MBN pumps are ideal for use in medium-pressure applications. They have a big variety of nozzle position options, thus providing flexibility during installation and simplifying the piping design.
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