Main applications rph

  • Auxiliary Systems
  • Boiler feed systems
  • Chemical industry
  • Cooling water and condensate
  • Energy
  • Industry engineering
  • Mining
  • Nuclear Power Stations
  • Oil /Gas
  • Petrochemical Industry
  • Pipelines and Tanks
  • Power Stations < 100 MW
  • Process
  • Refineries

Design rph

Horizontal radially split volute casing pump in back pull-out design, to API 610, ISO 13709 (heavy-duty), type OH2, with radial impeller, single-entry, single-stage, centreline pump feet; with inducer, if required. ATEX-compliant version available.

Application pump rph

Refineries, petrochemical and chemical industries, power stations, offshore and onshore processes.

Impeller type pump rph

▪ Closed radial impeller
▪ Impeller with impeller wear ring on the suction side (if required also on the discharge side)
▪ Sealing gap and balancing holes balance axial forces.

▪ Inducer to improve the NPSH value

As standard IP-55 IEC electric motor. For non monobloc pumps, IM 1001 (IM B3) construction. For monobloc pumps, as standard, IM 3001 (IM B5) construction.

Combustion motor option for monobloc variant pumps

Desing Details pump rph


▪ Volute casing pump
▪ Horizontal installation
▪ Back pull-out design
▪ Single-stage
▪ Meets technical requirements to API 610, 11th edition / ISO 13709

Pump casing

▪ Volute casing with integrally cast pump feet
▪ Centreline pump feet
▪ Single or double volute, depending on the pump size
▪ Radially split volute casing
▪ Axial inlet nozzle, tangential discharge nozzle pointing vertically upwards. (From DN 250 / from impeller diameter 500 / pump size 200-401: radial discharge nozzle pointing vertically
▪ Volute casing with casing wear ring
▪ Casing cover (with casing wear ring, as required)
▪ Casing and casing cover heatable/coolable, depending on size

Shaft seal

▪ Cartridge seal to API 682


▪ Uncooled
▪ Cooled bearing bracket
Drive-end bearing:
▪ Fixed bearing
▪ Paired angular contact ball bearings
▪ Oil bath lubrication
▪ Optional: oil mist lubrication

Overview of technical data rph

Q (50Hz)0.0 – 4,800.0 (m³/h)
H (50Hz)0.0 – 285.0 (m)
Type of bearingRolling element bearings
Casing partitionRadially split
Drive frequency50 Hz /60 Hz
Drive voltageLow voltage, high voltage
No. of impeller entriesSingle entry
Type of installationLong-coupled
Type of couplingDirect
Type of lubricationOil lubrication
Max. permissible fluid temperature450.0 (°C)
Nozzle positionEnd suction
Maximum operating pressurePN 100
Pull-out designYes
Pump set locationDry installed
StandardAPI 610, ISO 13709
Suction characteristicsNon-priming
Type of casingVolute casing
Type of impellerMulti-vane impeller, Closed, Closed / Radial, Radial
Type of connectionFlange
UNSPSC classification4015150300
eClass assignment36410101, 36410000, 36410100
Installation positionHorizontal
Shaft seal typeMechanical seal
Main applicationsOil / Gas, Industry and process engineering
Maximum discharge-side pressure110.0 (bar)
Maximum drive rating3200.0 (kW)
Type of installationStationary
Maximum speed of rotation3500.0 (1/min)