Main applications chtd

  • Boiler feed systems
  • Energy
  • Power Stations > 100 MW

Technical data

  • Q max 3,600.0 m³/h
  • H max 5,300.0 m

Design chtd

Horizontal high-pressure barrel-type pumps with radial impellers, single-entry and double-entry, multistage, with flanges or weld end nozzles to DIN and ANSI.

Application pump chtd

Pumping feed water and condensate in power stations and industrial plants, generation of pressurised water for bark peeling and descaling units

Drive pump chtd

Variable-speed condensing turbine
▪ Electric motor with geared variable speed coupling
▪ Electric motor with Vorecon gear
▪ Electric motor with frequency inverter and fixed-ratio gear
▪ Curved tooth and flexible disc couplings, low weight
decisive for rotor dynamics

Desing Details pump chtd


▪ Horizontal installation
▪ Radially split pump
▪ Single-entry or double-entry
▪ Multistage
▪ Profile seals for static sealing within the pump and to atmosphere, stage casings with metal contact faces, Orings for areas in contact with oil
▪ Nozzles always arranged radially
– Nozzles available with weld end or flange
– Positions: suction nozzle/discharge nozzle top or
bottom, or opposite to each other
Tapping nozzle top or bottom, angles 45° and 170°

▪ Sizes and number of stages
– Sizes 3 to 11, selection to flow rate at a nominal
speed of 4060 rpm
– Number of stages: 3 minimum, 9 maximum

▪ Individual support of shrink-fitted impellers and split ring for axial force transmission

Impeller type

▪ Radial impellers


Plain bearings with forced oil lubrication
▪ Radial bearing
– 2 grooved multi-lobe plain bearings
▪ Thrust bearing
– 1 bi-directional tilting-pad thrust bearing
▪ Measurement of the residual axial force via wire strain gauges on cardanic ring
▪ Cardanic ring desigend as flexible component, adaptation to rotor deflection line, measurement of residual thrust

Balancing device

▪ Double drum: 2 radial clearances of fixed width and 1 axial clearance of adjustable width
▪ The residual axial thrust is absorbed by the thrust bearing, which forms one functional unit with the double drum.

Overview of technical data chtd

Q (50Hz)0.0 – 3,600.0 (m³/h)
H (50Hz)0.0 – 5,300.0 (m)
Barrel casingYes
Type of bearingPlain bearings
Casing partitionRadially split
Drive frequency50 Hz /60 Hz
Type of driveElectric motor, turbine
Drive voltageLow voltage, high voltage
Type of first impellerSingle entry / Double entry
No. of impeller entriesSingle / Double entry
Other impeller typesClosed / Radial
Type of installationLong-coupled
Type of couplingGeared variable speed coupling, Gear, Variable speed coupling, Direct
Type of lubricationPressurized oil lubrication
Max. permissible fluid temperature210.0 (°C)
Nozzle positionVariable
Pump set locationDry installed
Suction characteristicsNon-priming
Type of connectionFlange, weld ends
Type of discharge casingAnnular casing / discharge volute
Type of stage casingStage casing with diffuser
Type of suction casingAnnular casing
eClass assignment36410101, 36410000, 36410100, 36410104
Installation positionHorizontal
Shaft seal typeMechanical seal, Floating seal
Main applicationsEnergy, Industry and process engineering
Casing materialChrome steel, Carbon steel
Maximum discharge-side pressure560.0 (bar)
Maximum suction pressure40.0 (bar)
Maximum drive rating40000.0 (kW)
Type of installationStationary