Ecolab EcoPro-ES-00510X-PFC-00S-1S-S0 Manuel D'utilisation page 128

Assembly, installation, modification and upgrades
Installation example 3
A pressure-retention valve or metering valve is not a shut-off device which is
absolutely tight sealing.
In order to prevent the metering medium from escaping while the pump is
stopped, we also recommend installing a solenoid valve (pos. 3), which is
released with the pump.
Installation example 4
Installation example 5
417102264 Rev. 5-01.2019
1 Injection valve / metering valve
2 External release
3 Solenoid valve
4 Pressure control valve
When metering in pipes with a vacuum, a pressure control valve (pos. 4) is
to be installed in the metering line.
1 Overflow valve
2 Injection valve / metering valve
The metering point should not be positioned below the supply container as
this creates a risk of the supply container being siphoned empty.
Suction lines should be kept as short as possible.
Long and intertwined suction lines can lead to accumulation of air in the
system.
The suction height must be a max. of 2 m and the maximum flow rate is
max. 0.3 m/s!
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