REMBE EXKOP Mini - Vacuum Conditions for Quench Valve

page 21 of 25 GBB-EXKOM-08157/3
Vacuum conditions for QV Quench Valve
If you expect vacuum conditions in the
process a bypass to the QV Quench valve
must be installed. The bypass eliminate
differential pressure between the process
and interior of the Quench seal. This
bypass assures full bore opening of the
Quench Valve.
Without electrical power the QV-Valve is closed by pressurized air from the plant
network. To open the QV Quench Valve the air valve must be energized. The QV
release the pressurized air through the bypass. Only one ½“pipe must be conducted
to the clean air side (vacuum side) of the filter. The bypass pipeline must withstand
the expected vacuum and shall not collapse due to the vacuum. The vacuum
equalization ensures a full bore opening.
The Quench Valve must be grounded to the counter flanges.
Before starting up the product flow, the QV II Quench Valve must be armed over the
EXKOP
®MINI
safety controller. Otherwise the Quench Valve will not ensure the full bore
opening and extensive abrasion will occur on the rubber seal. This will shorten the
lifetime of the Quench Valve unit.
1
Valve
2 Air in
V1
PE
3
P Pressure
4 switch
5
Valve
6 Air out
V2