Agilent Technologies TwisTorr 305 FS Notice De Mode D'emploi page 246

8 Technical Information
Pump Used with Corrosive and Oxidizing Gases
Figure 40
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Purge layout
Purge gas line
Pressure regulator
Gas purge valve
Gas purge port
Forevacuum pump
Turbopump
Vent valve
TwisTorr 305 FS User Manual / 87-901-057-01 (A.00)