Waters SYNAPT G2 Operator's, Overview And Maintenance Manual page 52

• At the diverter valve, use a long "finger tight" PEEK fitting.
• At the probe, use a PEEK nut and ferrule, finger tightened, to
connect to the PEEK union.
Tubing connection between the diverter valve and the ESI probe
(The other connections are omitted for clarity.)
Caution:
closing the source interface door.
8. Slide closed the instrument's source interface door.
3-6 Configuring the LockSpray Source
Long "finger tight" PEEK fitting
Diverter valve
Tubing connection
Ensure that the tubing does not become trapped when
PEEK nut and ferrule
ESI probe
Probe adjuster
assembly