Connection of the Fore-Vacuum Pump
A flange KF 16 NW is available to connect the TwisTorr 74 FS pump
to the forevacuum pump. A hose or vacuum approved pipe can be
used. If a rigid pipe is used, any vibration generated by the
mechanical pump must be eliminated through the use of bellows.
NOTE
The TwisTorr 74 FS pump is characterized by its high compression ratio also for
oil vapors. When using a mechanical oil sealed pump, it is advisable to install a
suitable trap between the turbopump and the fore vacuum pump in order to
prevent oil back streaming.
TwisTorr 74 FS User Manual / 87-901-053-01 (A.00)
Technical Information
Connection of the Fore-Vacuum Pump
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