System components Function Use
Vacuum cylinder Smooths out pulsation in the pipe (suc‐
tion side), generates a low-pulsation
flow
... to reduce pressure losses with longer
suction lines.
Priming aid ... as a priming aid together with a vacuum
pump.
Filter Filters coarse particles of solids from
the suction flow
... to protect metering pump and system
from dirt and increased wear and tear.
Solenoid valve Automatic shut-off valve
Control: for example electrically locked
by the metering pump's mains power
supply
... as a safety device for shutting off (tightly
sealing) the discharge line when the
system is idle.
CAUTION!
* The system components in the table labelled with a * are
not absolutely leak-tight shut-off elements.
– For this purpose use a shut-off valve C or a solenoid
valve.
3.2
Standard installation
Fig. 3: Standard installation
1 Main line
2 Storage tank
Installation, hydraulic
10
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