KSB RPH - Design Details

▪ 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 upwards)
▪ Volute casing with casing wear ring
▪ Casing cover (with casing wear ring, as required)
Optional:
▪ Casing and casing cover heatable/coolable, depending on size
Impeller type
▪ 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.
Optional:
▪ Inducer to improve the NPSH value
Shaft seal
▪ Cartridge seal to API 682
Bearings
▪ Uncooled
Optional:
▪ Cooled bearing bracket
Drive-end bearing:
▪ Fixed bearing
▪ Paired angular contact ball bearings
▪ Oil bath lubrication
▪ Optional: oil mist lubrication
Pump-end bearing:
▪ Radial bearing
▪ Cylindrical roller bearing
▪ Absorbs radial loads only
▪ Oil bath lubrication
▪ Optional: oil mist lubrication
Example: B03
Table 6: Bearing bracket designation
Designation Description
B Back pull-out bearing bracket
03 Size code (based on dimensions of seal chamber, shaft end
and bearings)
Bearing bracket
designation
4 Description of the Pump (Set)
RPH
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