OH2 - KRH

KRH01
KRH02
KRH03

The single-stage, horizontal, heavy version is designed acc. to the requirements of API 610 and ISO 5199. The robust design of the pumps, as well as the reliable hydraulic version, enable to fulfillment of all requirements of the application in many fields.

	KRH	KRHA
Q (m³/h)	1000	5000
H (m)	320	220
P (bar)	55 / 90	55
T (° C)	+450	+450

Range of application

Volute casing pumps of type KRH are applied in processing plants where complicated processing problems of liquid pumping have to be solved. Clean and slightly contaminated, cold and hot, chemically neutral or aggressive liquids can be pumped with these pumps.

Petrochemical Plants, Refineries
Chemical Industry/Process Engineering
Sugar Industry
Power Plants
Desalination Plants for Sea Water
Environmental and Offshore Engineering
Treatment Plants for Mineral Oil Systems, etc.

Operating Data, Characteristic Curves

Q= 1.000 m3/h
H= 320 m
P= 55/90 bar
T= +450 °C

Design features and properties

axial suction nozzle, radial discharge nozzle
centerline-supported
casing > NW 80 of double-volute design
reduction of axial forces
low vibration – long service life
back-pull-out version in connection with demountable coupling allows simple maintenance, volute casing and motor remain in initial position
seal area acc. to API 610/682, suitable for a variety of seals
standard version
flanges according to ASME B16.5 for class 300 or 600 lbs
exchangeable wear and guide rings enable easy maintenance and cost reduction
dynamically ballanced impellers guarantee very smooth running
solid shaft design meets all requirements of API-610

Materials

grey cast iron
ductile cast iron, ADI materials
cast steel
12 % chromium steel
austenitic steel
special alloys

Version with Inducer

Inducer is an additional upstream impeller of screw type which provides very low NPSH values
Design of the inducers is selected according to specific application range of Customer.

Design for high suction pressure

tandem bearing with cooled down oil sump
on very high pressure or bearing load a tandem bearing with oil pressure lubrication and external oil filtering and oil cooling
reinforced casing designs
special design of rotor package

Design for high Temperatures

temperature up to 450 °C
high process safety also on very high temperatures
special sealing concept for high temperatures
mechanical seal + barrier fluid system according to API-682 for high temperature
heat barrier prevents penetration of heat into bearing
fan cooling and cooled down oil sump ensure low bearing temperature
cooling of seal chamber

Download

Catalog KRH - english 2 MB