Install Instructions
Professional Plumbing Installation Guide
13
Section 3
ProPEX® Fitting System
Uponor ProPEX® F1960 cold-expansion fittings make solid, permanent, manufactured
connections without the need for torches, glues, solder, flux or gauges. The unique
shape memory of Uponor crosslinked polyethylene (PEX-a) tubing forms a tight seal
around the fitting, creating a strong, reliable connection.
General ProPEX Connection Tips
This section provides the information you need to make strong, reliable connections
using the ProPEX fitting system. It is important to read the contents of this
section completely and ensure that you have all of the required materials and tools
before beginning this process. If you have questions, contact your local Uponor
representative. This section covers the following topics:
• If the fitting does not slide into
the tubing all the way to the stop,
immediately remove it from the tubing
and expand the tubing one final time.
Note: To avoid over-expanding the
tubing, do not hold the tubing in the
expanded position.
• The number of expansions in Table 3-1
is the recommended number of
expansions. Experience, technique
and weather conditions influence the
actual number of expansions. Fewer
expansions may be necessary under
certain conditions. The correct number of
expansions is the amount necessary for
the tubing and the shoulder of the fitting
to fit snugly together.
• Ensure the ProPEX Ring rests snugly
against the fitting shoulder. If there is
more than
1
⁄16" (1mm) between the ring
and the shoulder of the fitting, square
cut the tubing 2" away from the fitting,
and make another connection using
a new ProPEX Ring and fitting. Brass
ProPEX fittings can be disconnected and
reused. Engineered polymer (EP) fittings
must be discarded. Be sure to follow the
recommended minimum distance between
ProPEX fittings chart in Table 3-2.
Table 3-1: Recommended Number of Expansions for
3
⁄8" to 2" Tubing at 73.4ºF (23ºC)
Note: “H” in the table refers to Uponor H-series expander heads.
Tubing
Size
Milwaukee ProPEX Tool Uponor ProPEX Tool
M12 M18 Manual 100 & 150 201
3
/8" 8 9 5 7 —
1
/2" 5 6 4 4 —
3
/4" 9 8 9 9H —
1" 13 5 14 7H —
1
1
/4" — 7 — 7H —
1
1
/2" — 6 — 8H —
2" — — — — 5H
Nominal
Fitting Size
Cut Length
of Pipe
1
⁄2" 2
1
⁄2"
3
⁄4" 3
1
⁄2"
1" 4
1
⁄2"
1
1
⁄4" 5
1
⁄2"
1
1
⁄2" 6
1
⁄2"
2" 7
1
⁄2"
Table 3-2: Minimum
Distance Between
ProPEX Fittings