Page 139 - PRESS-FIT SYSTEMS FOR DIVERSE APPLICATIONS

3. DEBURR AND CHECK THE TUBE ENDS: PIPEWORK CLEARANCE
Both the internal and external tube ends should be deburred then wiped When designing an XPress System, please take care
clean of all swarf and debris to avoid damage to the O ring upon tube to ensure all joints can be accessed easily. Observe
insertion. Also check that the tube end is clean and free from damage such as minimum gaps and insertion distances to ensure
scores, tape, labels or adhesive residue. sufficient access for the pressing tool, where applicable.
ACCEPTABLE METHODS OF DEBURRING INCLUDE:
S120 - 15 to 54mm internal S122 - 15 to 54mm external only Important:
and external. but can re-round damaged tube. XPress galvanised Sprinkler system tube (SC645) can
Use on copper only. only be used in sprinkler installations and should not
be used in a general plumbing application.

SPACING
Similar consideration
Minimum projection
should be given
to the distance
pipe stubs project
through walls or
bulkheads. Refer to
table on Page 137.

Projection distances
Good practice
shown in the table
below also ensure
that the subsequent
installation will be a
TC150: 15 - 22mm external only, Hand file. convenient distance
very good for carbon steel tube. from the wall.
TC143 and TC147 internal only.

NOTE: If using plastic coated
carbon steel system tube the plastic FITTING SPACING FOR XPRESS
coating must be removed from the
socket depth of the fitting using the Sizes Min. gap between Min. tube projection
S115 stripping tool from the XPress fittings
accessories range. 15mm 10mm 40mm
18mm 10mm 40mm
Use the S115 Tube Stripper for
removing the plastic from plastic 22mm 10mm 40mm
coated carbon steel tube. 28mm 10mm 60mm

35mm 10mm 70mm
Having deburred 42mm 20mm 70mm
as above you will be 54mm 20mm 70mm
left with a 1mm chamfer 66.7mm 30mm 70mm
on the outside of the tube as
indicated in the diagram. Wipe 76.1mm 40mm 80mm
clean the tube end of remove all 88.9mm 50mm 90mm
swarf and debris. 108mm 50mm 100mm

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