KSB S 100D - Page 76

60 Hz
UPA 300, 350
76
Design Features (UPA 300--94/.. + UMA 250D ../21)
3411:10
Check valve with anti-blockage
valve disc
-- No jamming or tilting.
-- Spring-loaded design makes for
minimum valve closing times and
prevents waterhammer.
-- High operating reliability.
Robust wear rings
-- Replaceable wear rings made of
corrosion- and wear-resistant
metal.
-- Protection against wear in the
clearance; easy servicing.
Stainless steel union elements
-- All wetted bolts, screws and nuts
are made of CrNiMo steel.
-- High operating reliability.
-- Easy to remove and re-use even
after many years of operation.
Wear-resistant mechanical
seal
-- Long service life and high
operating reliability.
Counter thrust bearing
-- Reliable balancing of negative
axial thrust.
-- Impellers do not rub on the stage
casings.
Tried and tested thrust bearing
-- Water-lubricated self-aligning
tilting-pad journal bearing.
-- No-maintenance design suitable
for maximum load-carrying
capacity under continuous
operation conditions.
-- New materials combination
(stainless steel / carbon) for high
safety factor.
Enclosed pump bearing
-- No-maintenance design, high wear
resistance.
-- For trouble-free long-term operation.
Stainless steel pump shaft
-- Fully protected by impeller hubs and
sleeves from direct wear caused by
the fluid handled.
The KSB motor
-- Efficienciesupto91%.
-- VDE-compliant, i.e. high level of
electrical safety.
-- Designed for max. pump power to
protect unit from overloads.
Reliable pressure balancing system
-- Optimum rubber expansion diaphragm
design.
-- Enables installation at very low depths
Dynamically balanced rotor
-- Ensures smooth running.
Mixed-flow impellers
-- Can be turned down. This means
pump performance can be exactly
matched to head requirements in the
system.
All wetted plastic components are
approved for drinking water contact
(BAM
1)
)
-- Coating, electric cables, seal
elements, gaskets, etc. are
absolutely fit for use in drinking
water applications.
1) German Federal Institute for Materials Research