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10
Swagelok Connections
Making Swagelok Connections
C A U T I O N
182
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 19 Swagelok nuts and ferrules
2
Clamp a stainless steel plug or similar fitting in a bench vise.
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
required to properly set the ferrules, and damage to an inlet or
Do not
detector fitting is very costly to repair.
3
Push the tubing into the stainless steel plug
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
19.
IMPORTANT!
The narrow end of the back
ferrule fits into the rear of
the front ferrule.
(Figure
20).
Maintaining Your GC
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