Columns and Traps
Installing packed metal columns
Released: March 2004 6850 Series II GC User Information page 45 of 256
Use the following instructions to install new SWAGELOK® nuts and ferrules
onto 1/8-in. or 1/4-in. metal columns.
1. Install new SWAGELOK nut and ferrules on the column.
2. If needed, make a Teflon spacer sized for your column. (See “Make a
spacer from Teflon tubing” on page 45.)
3. Install the Teflon tubing spacer in the male fitting. Fully insert the column
with its nut and ferrules into the vise-held fitting. Tighten the nut finger
tight.
Use a wrench to tighten the nut an additional 1-1/4 turn for 1/4-in. columns
or 3/4 turn for 1/8-in. columns.\
Unscrew the column nut from the vise-held fitting and remove the column.
Ferrules should now be set in place on the column with the column
correctly positioned.
Make a spacer from Teflon tubing
1. Secure a new male Swagelok fitting in a bench vise.
Front ferrule
Back ferrule
Swagelok nut
Teflon tubing
Male Swagelok fitting
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