1 Pipe
2 Union nut
3 Rear clamp ring
4 Front clamp ring
5 Valve
CAUTION!
Warning of feed chemical spraying around
Connections can come loose in the event that
hose lines are installed incorrectly on stainless
steel valves.
–
Only use PE or PTFE hose lines.
– In addition, insert a stainless steel support
insert into the hose line.
8.1.2 Installation with metering pumps with degassing
All the installation and safety information for metering pumps
without degassing also applies.
A return line is also connected in addition to the suction and pres‐
sure line.
1. Attach the hose line to the return hose sleeve or to the liquid
end vent valve. PVC hose, soft, 6x4 mm is recommended.
2. Feed the free end of the return line into the supply tank.
3. Shorten the return line so that it is not immersed in the feed
chemical in the supply tank.
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.
Fig. 10: SST designs
Installing hose lines - SST design
Installation of the return line
Safety notes
Installation, hydraulic
33
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