Main benefits
  • Maximum safety due to double casing design. Pipework connections remain undisturbed during disassembly
  • High-strength barrel material to resist thermal shock
  • Full cartridge pull-out for rapid changeover
  • Design features that eliminate the need for pre-warming in most installations except on large size
  • Long operating life regardless of the operating mode
Main applications
  • Main boiler feed in thermal power stations
Main design features
  • Barrel design incorporates many design features resulting from Sulzer/EPRI research contract
  • Axial thrust compensation by balance piston to avoid damage during transient conditions
  • Fully rated double-acting tilting pad thrust bearing
  • Radial grooves for increased radial stiffness, reduced effect on rotor tilting, and good rotor dynamic behavior
  • Swirl break at balance piston to maintain rotor stability, even when the running clearances are worn
Key characteristics
Capacities Up to 4,000 m3/h / 17,600 US gpm
Heads Up to 4,200 m / 13,800 ft
Pressures Up to 545 bar / 7,905 psi
Temperatures Up to 220°C / 430°F
Discharge sizes Up to 500 mm / 20 inches
Performance range
HPT performance range
Performance range
  • 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.
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