Ecolab Elados EMP II E60 Mode D'emploi page 85

For metering in pipelines with under pressure, a pressure control
valve must be built into the metering pipe.
NOTE
To prevent the running out of the metering medium when the
pump is stopped, we also recommend the fitting of a solenoid
valve which is approved for use with the pump.
Pos Description
1 Injector valve / Metering valve
2 External release
3 Solenoid valve
4
Pressure control valve
Fig. 7.3 Hydraulic installation: installation examples 3
The metering point should not be positioned below the discharge
container as this arrangement creates a risk of the discharge
container being siphoned empty.
Pos Description
1
Overflow valve
2 Injector valve / Metering valve
Hydraulic installation: installation examples 4
Fig. 7.4
The suction pipes must be kept as short as possible.
Long and twisted suction pipes may lead to air build-up in the system.
The max. suction height is 2 m and the max. flow velocity is 0.3 m/s!
(see also chapter
Fig. 7.5 Hydraulic installation: installation examples 5
Always lay the suction pipe so that it ascends to the suction valve of the
metering pump.
Fig. 7.6 Hydraulic installation: installation examples 6
Installation of a metering monitoring system:
A metering monitoring system – oval gear meter (Pos.1) or flow
indicator - has to be installed in the metering pipeline between the
pressure relieve valve and the pressure control resp. metering valve.
Fig. 7.7 Hydraulic installation: installation examples 7
417101438_EMP_II_E60
A pressure control valve or a metering valve is not
an absolutely hermetically sealing shutoff device.
14 "Technical Specifications")
- 85 - Rev. 12-01.19