Making Swagelok Connections - Agilent Technologies 7820A Manual

A
Swagelok Connections

Making Swagelok Connections

C AU T I O N
288
Objective
To make a tubing connection that does not leak and that can be
taken apart without damaging the fitting
Materials needed:
• 1/8-inch (or 1/4-inch, if used) preconditioned copper tubing
• 1/8-inch (or 1/4-inch, if used) Swagelok nuts
• Front and back ferrules
• Two 7/16-inch (for 1/8-inch nuts) or 9/16-inch (for 1/4-inch
nuts) wrenches
1 Place a Swagelok nut, back ferrule, and front ferrule to the
tubing as shown in
Front ferrule
Back ferrule
Nut
Tubing
Figure 8 Swagelok nuts and ferrules
Clamp a stainless steel plug or similar fitting in a bench vise.
2
Use a separate stainless steel fitting in a vise for initial tightening of
the nut. Do not use an inlet or detector fitting. Strong forces are
Do not required to properly set the ferrules, and damage to an inlet or
detector fitting is very costly to repair.
Push the tubing into the stainless steel plug
3
4 Make sure that the front ferrule is touching the plug. Slide
the Swagelok nut over the ferrule and thread it onto the plug.
Figure 8.
IMPORTANT!
The narrow end of the back
ferrule fits into the rear of
the front ferrule.
(Figure 9).
Maintaining Your GC