Multitec
The unit/pump is installed sometime before the plant is
commissioned :
Special measures have to be taken after a prolonged shutdown
period, e.g., to make sure that the pump is always ready for instant
start-up and to prevent the formation of deposits within the pump’s
hydraulic system and intake area.
These measures are described in section 6.3.1.
4. Description of the Product and
Accessories
4.1 Technical specification
Multistage centrifugal pumps in ring-section design with suction
impeller for low NPSH value (exception : MTC 32).
Horizontal design, baseplate mounted,
1 casing entry, drive end
1 rolling element bearing, drive end
1 plain bearing, suction end axial
suction nozzle
For the entire Q/H range
Same as installation type A, but
with radial suction nozzle
Horizontal design, baseplate
mounted 2 casing entires, drive
and suction end
2 rolling element bearings drive
on discharge side
For the entire Q/H range
Same as installation type C, but
drive on suction side
Horizontal close coupled pump,
Common bearing for pump and
motor rigid coupling,
radial suction nozzle,
Q/H range : up to 100 m
3
/h, 25 bar
Same as installation type E, but
with axial suction nozzle
Vertical close - coupled pump
Q/H range : up to 204 m
3
/h 25 bar
up to 100 m
3
/h 40 bar
4.2 Designation
Multistage A 32 / 8E - 2.1 12 . 65 (SP)
Type series
Installation type/pump version
DN discharge nozzle
Number of stages/impeller combination
Hydraulics
Material variant
Shaft seal code
Code for special variants (optional)
4.3 Design details
Design :
High-pressure centrifugal pump in long-coupled (baseplate
mounted) or close-coupled design, horizontal or vertical version,
axial or radial suction nozzle. Radial suction and discharge
nozzles can be turned by 90_.
Bearings :
Radial bearings made as silicon carbide plain bearings (not for
version C and D), self-aligning. Plain bearings lubricated by the
pumped product, fixed bearings made as rolling element bearing,
grease- or oil-lubricated.
Shaft seal :
Uncooled gland packing with or without sealing liquid feed.
Standardized mechanical seal to DIN 24 960, uncooled or cooled.
Double-acting mechanical seal with standardized mechanical
seals to DIN 24960 (back-to-back or tandem).
Drive :
Electric / Hydraulic drives or Diesel engines, or turbines up to
max. 4000 1/min.
4.4 Fields of Application
Municipal water supply :
Pumping stations, water treatment and pressure boosting plants.
Water treatment :
Filtration, reverse osmosis.
Pumps in industrial applications :
General water supply, cold water, washing systems, recycling,
cooling circuits, boiler feed systems, warm water, hot water,
condensate handling, process, organic and inorganic liquids,
degreasing agents, washing or alkaline solutions, lubricants,
cooling, surface treatment.
Air-conditioning :
large-scale air-conditioning systems, highrise buildings.
Irrigation :
Centre-pivot sprinkling systems, trickle irrigation systems,
square sprinkling systems, flood irrigation systems.
3
To Next Page
Loading...
