Manually operated or solenoid gas ballast valve
The gas ballast valve is used for the purpose of avoiding condensation within
the pump.
Purge gas facility
(only for certain pump versions)
Purge gas prevents that process gas escapes via the two shaft seals to the
environment and protects components and seals against corrosion.
Available Pump Versions: Overview
P/N,
mains frequency
Pump versions Required additional
Operating Instructions
115 001
50 Hz/60 Hz
with manually operated
gas ballast
115 003
50 Hz/60 Hz
with solenoid gas ballast and
purge gas for shaft seal
ATEX 3i
115 006
50 Hz/60 Hz
with manually operated
gas ballast,
Purge gas for shaft seal, Purge
Vent Kit and 4 swivelling castors
and integrated adjustable feet
300301758 Purge-Vent-
Kit SP250
Fig. 1.7 Schematic depicting the operating principle of the monitoring system
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