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Pump type PE 90-110

Model: PE 90-110
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Pump type PE 90-110

The PE 90-110 feedwater pump is a centrifugal pump designed to supply water to stationary steam boilers with absolute steam pressure up to 6.2 MPa (63 kgf/cm²). It is intended for superheated feedwater in thermal power plant boilers, as well as waste-heat boilers at power plants with combined-cycle and steam-driven units.

  • Maximum Flow: 90 m³/h
  • Maximum Head: 1100 m
  • Allowable NPSH: 5 m

Design Requirements:

  • High reliability and efficiency
  • Free thermal expansion of rotor and stator without misalignment
  • External tightness and absence of internal leaks
  • Long service life: 15,000–30,000 hours with proper maintenance
  • Protection against backflow
  • Dynamic stability across all operating ranges
  • Smooth, continuously falling head curve
  • Ease of assembly, disassembly, and maintenance

Drive and Efficiency:

  • Usually driven by an asynchronous electric motor with frequency converter
  • Nominal rotation speed: 2970 rpm
  • Overall efficiency of pump + drive system: 61%
  • Nominal motor power: 500 kW

Design Features:

  • Single-Case Sectional Multistage: High efficiency and reliability
  • External Sliding Bearings: Improve stability and reduce wear
  • Thermal Expansion Compensation: Allows for effective handling of thermal loads
  • Flexible Rotor Shaft: Diameter-to-length ratio up to 1:20 for strength and durability
  • Hydraulic Foot (Hydropad) for Axial Load Compensation: Balances axial forces across all operating conditions

Dimensions and Weight:

Parameter Value
Pump Mass 5000 kg
Complete Unit Mass 6860 kg
Overall Dimensions (L×W×H) 3185 × 1330 × 963 mm

Materials of Construction:

  • Pump Body, Sections, and Bearings: Cast iron СЧ20 (GOST 1412) – corrosion-resistant and strong
  • Rotor Shaft: Heat-treated steel 40Х – high strength and wear resistance
  • Impellers: 25Л cast iron or stainless steel 20Х13 – durable and corrosion-resistant

Optional Upgrades:

  • Mechanical Seals: Replace traditional gland packing, reduce leaks, increase reliability
  • Bearings in Pumped Medium: Simplify maintenance and extend service intervals
  • VDS Monitoring System: Vibration, axial displacement, speed, and temperature sensors for predictive maintenance
  • Flow Path with Corrosion-Resistant Overlay: Stator in carbon steel with anti-corrosion surfacing; rotor in stainless steel

Ordering Information:

To order PE 90-110 or request consultation, contact CHT Slovakia s.r.o. sales team via phone or online form.

  • Delivery to all CIS countries (except Russia and Belarus) and Europe
  • Pump units are packaged for convenient road or rail transport
  • Installation dimensions and specifications available from sales managers