FDI P2131, Техническое руководство, Страница: 133 / 161

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INSTALLATION INSTRUCTIONS
Over 1 in./25 mm
1. Preswage the ferrules onto the tube using a
Swagelok multihead hydraulic swaging unit
(MHSU).
2. Apply the lubricant packaged with the fitting
lightly to the body threads and the rear surface of
the back ferrule.
3. Insert the tube with preswaged ferrules into the
fitting until the front ferrule seats against the
fitting body; rotate the nut finger-tight.
4. Mark the nut at the 6 o’clock position.
5. While holding the fitting body steady, tighten the
nut one-half turn to the 12 o’clock position.
Use the Swagelok MHSU gap inspection gauge to
ensure that the fitting has been tightened sufficiently.
Swagelok Tube Fittings
Gaugeability
On initial installation, the Swagelok gap inspection
gauge assures the installer or inspector that a
fitting has been sufficiently tightened.
Position the Swagelok gap inspection gauge next
to the gap between the nut and body.
Always depressurize a system before
adjusting the tightness of a tube fitting
connection.
If the gauge will enter the
gap, additional tightening
is required.
If the gauge will not enter
the gap, the fitting is
sufficiently tightened.
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INSTALLATION INSTRUCTIONS
Reassembly—All Sizes
You may disassemble and reassemble Swagelok tube
fittings many times.
Always depressurize the system before
disassembling a Swagelok tube fitting.
While holding the fitting
body steady, rotate the
nut with a wrench
to the previously
pulled-up position,
as indicated by the
marks on the tube and
flats. At this point, you
will feel a significant
increase in resistance.
Tighten the nut slightly.
Insert the tube with preswaged
ferrules into the fitting until
the front ferrule seats
against the fitting body.
Over 1 in./25 mm sizes:
If needed, reapply
lubricant lightly to the
body threads and the
rear surface of the back
ferrule.
Prior to disassembly, mark the tube
at the back of the nut; mark a
line along the nut and fitting
body flats.
Use these marks to ensure
that you return the nut to
the previously pulled-up
position.
Do not use the Swagelok gap inspection
gauge with reassembled fittings.
Swagelok Tube Fittings
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