Operation
25
Gas ballast valve
standard version
If valve nut 103 of gas ballast valve 5 is turned counterclockwise until it stops, the valve
is opened. If the lock nut is turned clockwise until it stops, the valve closes. An interme-
diate position is not possible.
The silencer constantly supplies small amounts of ambient air for the pump and thus aids
the quiet running of the pump at ultimate pressure when the gas ballast valve is closed.
Fig. 13: Gas ballast valve 5 in standard version
Conversion kit for
gas ballast valve (op-
tion)
Conversion set 121 is available for the gas ballast valve for connecting flushing gas, a
dust separator and/or a solenoid valve to small flange connection KF 10.
Fig. 14: Conversion set for gas ballast valve with solenoid valve and/or dust separator
●
Dust separator
:
– A dust separator should be used if dust laden air is sucked in. It should be noted
that when the dust separator becomes fouled the amount of gas ballast fed de-
creases and the risk of condensation from process media increases.
●
Solenoid valve
:
– Controlled inlet of ambient air or connecting inert gas possible.
100 Needle valve (silencer)
103 Valve nut
103
100
5
The silencer is factory-set and should not be changed, otherwise the pump's final
vacuum without gas ballast valve and also noise development are impacted ad-
versely.
5
Gas ballast valve
111
Needle valve
121 Conversion set DN 10 KF (complete)
A
Solenoid valve (option)
B
Dust separator SAS 016 (option)
A
121
5
111
B
