Ecolab Elados EMP II-E10 - Page 39

417101339_EMP_II_E10
39
Rev. 10-01.19
For metering in pipelines with under pressure, a pressure control valve
must be built into the metering pipe.
NOTE
A pressure control valve or a metering valve is not an
absolutely hermetically sealing shutoff device.
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.
Fig. 6.3
Pos.
Description
1
Injector valve / Metering valve
2
External release
3
Solenoid valve
4
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.
Fig. 6.4
Pos.
Description
1
Overflow valve
2
Injector valve / Metering valve
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 11.3 “Technical Specifications“)
Fig. 6.5
Always lay the suction pipe so that it ascends to the suction valve of
the metering pump.
Fig. 6.6