Multitech 1777.8/7-10 G3 - Manual (Page 6)

Multitec
6
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).
A
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 H/Q range
B
same as installation type A, but
radial suction nozzle
C
Horizontal design, baseplate
mounted,
2 casing entries, drive and suction
end
2 rolling element bearings
drive on discharge side
for the entire H/Q range
D
same as installation type C, but
drive on suction side
E
Ex
Horizontal close-coupled pump,
common bearing for pump and mo-
tor,
rigid coupling,
radial suction nozzle
H/Q range: up to 100 m 3 /h, 25 bar
F
Fx
same as installation type E, but
axial suction nozzle
V
Vx
Vertical close-coupled pump
H/Q range: up to 204 m 3 /h 25 bar
up to 100 m 3 /h 40 bar
4.2 Designation
Multitec A 32 / 8E - 2.1 12 . 65 (SP)
Type series
Installation type / pump version
Discharge nozzle DN
No. of stages / impeller combination
Hydraulic system
Material variant
Shaft seal code
Code for special variants (optional)
4.3 Design details
Pump type
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 are silicon carbide plain bearings (not on
versions C and D), self-aligning. Plain bearings lubricated by
fluid handled. Fixed bearings are rolling element bearings,
grease- or oil-lubricated.
Shaft seals:
Uncooled gland packing; with or without barrier fluid.
Standardized mechanical seal (uncooled, cooled) to EN 12756.
Double-acting mechanical seal with standardized mechanical
seals to EN 12756 (back-to-back or tandem).
Cartridge seals, special designs.
Drive:
Electric / hydraulic drives, Diesel engines or turbines up to max.
4000 1/min.
4.4 Applications
Municipal water supply: pumping stations, water treatment
and pressure boosting systems.
Water treatment: filtration, reverse osmosis.
Pumps in industrial applications: general water supply, cold
water, washing systems, recycling, cooling circuits, boiler feed
systems, hot water, superheated 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,
high-rise buildings
Irrigation: centre-pivot sprinkling systems, trickle irrigation
systems, square sprinkling systems, flood irrigation systems.