Installation example 4
1 Overflow valve
2 Injector valve (Metering valve)
3 Pressure control valve
The metering point should not be
positioned below the discharge container
as this arrangement creates a risk of the
discharge container being siphoned
empty
.
If such an arrangement cannot be avoided
for configuration-technical reasons,
absolutely an appropriate pressure control
valve is to be inserted.
Installation example 5
When using long metering lines or in the case of an inflexible pipe work,
a pulsation
attenuator (pos. 1) should be installed in the pressure line
(directly behind the pressure valve of the metering pump) in order to avoid
pressure strokes.
Installation example 6
The suction pipes must be kept as short as possible.
Long and twisted suction pipes may lead to air buildup in the system.
The max. suction height is 2 m and the max. flow velocity is 0.3 m/s!
Ä
Chapter 10.3 ‘General data – Standard pumps’ on page 55
Assembly, mounting and installation
31 417102233 Rev. 3-03.2019
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