PEX Installation Manual

IM-PF 724596 0416
56
Snap-in Bend Supports with Bracket
Half-inch snap-in bend supports are also available with
a metal mounting bracket (sold separately) for quick
and easy stub outs with ½" ViegaPEX Ultra tubing.
Seven stub out locations and numerous nail holes
make this a versatile option for stubbing out any
number of lines or supporting tubing near manifolds.
Copper Tubing Adapters
Press ProPress Adapter
Copper Fitting Adapters
17.2 Copper connections
Fittings are available to adapt ViegaPEX Ultra tubing to
both copper tubing and copper ttings. Copper tubing
adapters slip over copper tubing to provide a sweat
connection. Always make the sweat connection to the
tting before connecting PEX to avoid heat damage to
the tubing.
Copper tting adapters t into copper ttings to
mate PEX to standard sweat or ProPress ttings. As
with copper tubing adapters, always make sweat
connections prior to PEX connection to avoid tubing
damage.
PEX Crimp fitting adapters are not for use
with the Viega ProPress connection.
17.2.1 Soldering Zero Lead alloy PEX fittings
Viega’s Zero Lead PEX ttings are manufactured
from alloys known for their low lead content and
corrosion-resistant properties. These alloys have
lower thermal conductivity compared to standard
(leaded) alloys, which tends to make them more
sensitive to soldering conditions. It is important to
follow the steps below to ensure consistent leak-
free solder connections.
Prepping and cleaning
Zero Lead alloys are harder than standard alloys.
Cleaning and prepping the Zero Lead solder joint
area with an abrasive product like emery cloth,
sandpaper or wire brush is an important step in
the solder process. Do not rely on ux alone. This
surface preparation removes the natural oxidative
barrier that tends to form on Zero Lead alloys.
Once this is done, uxing and soldering should be
done immediately to ensure the oxide lm does not
reform on the freshly cleaned surface.
Use of proper flux and solder
Only use ux containing chloride compounds.
Solder uxes without chloride compounds are
not recommended for use on Zero Lead alloys.
Only lead-free solder should be used to
make Zero Lead solder connections.