Agilent Technologies X3500-64000 Mode D'emploi page 286

17 Technical Information
Purge Valve Installation
Purge Valve Installation
A gas purge valve is available to protect the pump bearings against
particulate and corrosive gases that could move into the pump. To
install the gas purge valve it is necessary to unscrew the purge port
cover as shown in the following figure,
Figure 50
and then screw the gas purge valve (with a torque of 2.5 Nm) as
shown in the following figure.
286/304 TwisTorr 304 FS User Manual / 87-901-027-01(B)