Series SCK, Size 25-25-100
Page 12
9220-003-en
Revision 14
TM 10272
Edition 01/2021
5.4.2 Nozzle loads
The pump can be subjected to nozzle loads acc. to
DIN EN ISO 5199.
Changes in the length of the piping caused by
temperature are to be allowed for by appropriate
measures, e.g. the installation of expansion joints.
5.4.3 Suction line
The suction lines must always be laid on a rising gra-
dient towards the pump. Otherwise, gas bubbles may
form which considerably reduce the suction line cross
section. Eccentric transition elements must be in-
stalled between different pipe diameters.
Valves which disrupt the course of flow should not be
installed directly upstream of the pump.
Fig. 3
5.4.4 Supply lines
Supply lines should vent towards the reservoir and are
therefore to be laid with a constant downward gradient
towards the pump. Should the piping internals up-
stream of the pump be horizontal, a low point can, of
course, be located upstream of these internals. From
here the pipe is then laid with an upward gradient to
the pump so that the gas bubbles which form here can
escape through the pump.
Valves which disrupt the course of flow should not be
installed directly upstream of the pump.
5.4.5 Discharge line
Do not arrange the shut-off valve directly above the
pump but initially provide a transition section.
The discharge nozzle velocity of the medium can
–
if
necessary
–
be reduced.
5.4.6 Venting and evacuating
Venting can take place into the discharge line or
upstream of the discharge valve.
A venting line can also be used as a bypass, drain or
flushing line.
The pump housing is fitted with a drain connection as
a standard feature. Optionally, the drain bore can be
drilled.
Boring template see
Section 10.5
.
Fig. 4
5.5 Pipe fittings
The following pipe fittings are available from Richter
on request:
Shut-off valves
Check valves
Sight glasses
Priming vessels
Strainers
Pressure gauges
Fig. 5
