Figure 2–11: Reinstalled
Flats
Compression screw
Lock ring
Ferrule
Tighten the fitting finger-tight until first resistance is felt, plus as much as an additional 1/4-turn
using a 1/4-inch open-end wrench.
Figure 2–12: Reinstalled tightening
2.6.1.11 PEEK sample needle fittings
The sample needle uses a PEEK compression fitting and two-piece, flat-bottom ferrules. The
compression fitting and ferrules differ slightly, depending on the sample needle’s outside
diameter.
The sample needle fitting is sometimes preset on the needle. Where it is not preset, assemble the
fitting as shown in PEEK fitting with flat bottom ferrule, ensuring that the thin wall of the locking
ring faces the flat-bottom ferrule. Doing so ensures that the ferrule is correctly compressed onto
the needle tubing.
November 26, 2019, 715003588 Revision C
Page 41
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