Model KRH - Single Stage Pump
From Process Pumps
Heavy duty process pump acc. API610, type OH2 . Q= 1000 m³/h. H= 320 m. P= 55/90 bar.T= +450 °C.
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Applications
- Refineries
- Petrochemical plants
- Offshore engineering
- Gas process plants
- Power plants
Operating Data, Characteristic Curves
- Q= 1.000 m3/h
- H= 320 m
- P= 55/90 bar
- T= +450 °C
Design Features
- pump meets all requirements of API-610, Typ OH2, horizontal, single-stage, radial-split, heavy-duty design
- 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
Design with Inducer
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
KRHV
- Vertical volute-casing pumps for wet or dry installation with most different submersion depth up to 8 m
- Shaft on drive side with robust pair of angular ball bearings of long life being led in the pump in maintenance-free slide bearings
- Slide-bearing locations are lubricated by means of liquid to be pumped via lubrication piping.
- Bearings with oil or grease lubrication, optionally we can provide bearing cooling.
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