4300
Catalog
Assembly / Installation
Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
S13
Lightly deburr the I.D. and O.D. of the tube end to remove burrs
andsharpedges.Use the In-Exdeburring tool or power deburring
tool (shownonpageR22), or emery paper if using tube cutter (for
soft tube) or hacksaw.Use front mounted deburring tools if using
TP432 or TP1025 tube preparation center found o
n page R55.
Note:
Point tube end downward during deburring to keep chips
from entering the tube.
Cleaning
Remove metal chips from I.D. with a brush or compressed
air. Wipe the I.D. and the O.D. of the deburred tube end with a
clean rag. Debris present in the tube end can result in system
contamination or can get embedded into the flange or flare,
causing imperfections that are potential leak paths.
Seal-Lok Assembly
The proper assembly of the Seal-Lok fitting requires several
steps, each important in guaranteeing a leak-free connection
and a long service life:
1.
Cutting, deburring and cleaning the tube
2.
Sleeve Attachment
3.
Inspection of sleeve attachment
4.
Final installation
Thefirst stepof cutting, deburringandcleaninghasbeencovered
in a previous section
(see page S12).
For recommended minimum and maximum tube wall thickness
for Seal-Lok fittings, please refer t
oTable U3 a
n
d U4 o
n
page U3.
Stainless seel lubricant is not necessary for assembly unless
parts are washed or heated above 150°. The light wax coating
will evaporate at that point.
Sleeve Attachment
Attaching the sleeve to the tube end is the next critical assembly
step. This can be accomplished by two methods mechanically:
(
flanging) or brazing.
Fig. S15 – Seal-Lok Union cutaway with flanged and brazed
assemblies
Braze Sleeve
O-ring
Parflange
Sleeve
Nut
Fitting Body
Flanging
The flanging method requires the use of an appropriate forming
machine to create the flange or flat face on the tube end. Since
the flat face of the flanged tube seals against the O-ring within
the fitting groove, it is important that this surface be relatively
smooth. Proper tube end preparation (cutting, deburring and
cleaning) will help accomplish this goal
The Parker Parflange
®
machines utilize an orbital cold forming
process to produce a flat, smooth, rigidly supported 90° sealing
surface on the tube end.
Fig. S16 – Parker’s exclusive orbital spindle motion produces a
perfect flange every time
Parker offers abenchmountmodel knownas theParflange1025,
shown in Fig. S17, as well as a more versatile, fully automated
high speed models. For additional information on the Parflange
machines and tooling, refer to
section R
of this catalog.
For
additional information on the fully automated models, please
contact Parker Tube Fittings Division.
Fig. S17 – Parflange 1025 machine
Tube End / Seal-Lok Assembly