Fig. 14: SEK liquid end
1 Anti-kink device
2 Vent valve for the return line into the supply tank, 6/4 mm
3 Red sleeve
4 Discharge valve for the pressure line to the injection point, 6/4 -
12/9 mm
5 Suction valve for the suction line in the supply tank, 6/4 - 12/9
mm
8.2 Basic installation notes
CAUTION!
Danger resulting from rupturing hydraulic compo‐
nents
Hydraulic components can rupture if the maximum
permissible operating pressure is exceeded.
– Never allow the metering pump to run against
a closed shut-off device.
–
With metering pumps without integral relief
valve: Install a relief valve in the discharge line.
CAUTION!
Hazardous feed chemicals can escape
With hazardous feed chemicals: Hazardous feed
chemical can leak out when using conventional
bleeding procedures with metering pumps.
– Install a bleed line with a return into the storage
tank.
Shorten the return line so that it does not dip into the feed
chemical in the storage tank.
Safety notes
Installation, hydraulic
37
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