Agilent Technologies TwisTorr 404 FS Notice De Mode D'emploi page 292

17 Technical Information
Inlet screen installation
Figure 16
The screen can be mounted on each pump.
The screen can be removed as shown in the following figure.
Figure 17
The overall flange dimensions with the protection screen fitted on
pump do not change as the inlet screen remains inside the pump
profile.
292/326 TwisTorr 404 FS User Manual / 87-901-048-01 (A.00)