Install Instructions

Installing Viega PureFlow Fittings
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IM-PF 724596 1021 PureFlow Water System (EN)
13.2.1.2 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.
Thoroughly wipe any solder or 󶈶ux left behind.
CAUTION!
Only lead-free solder should be used to make zero lead
solder connections.
13.2.1.3 Heating
Like standard (leaded) alloys, heating of the zero lead solder joint should be done
evenly and gradually using an appropriately sized tip with constant movement of
the 󶈶ame over the joint. Be careful not to overheat the zero lead alloy while making
a solder joint. Overheating will result in a brown discoloration of the metal, which
is an indication that 󶈶ux has burned out of the solder joint, potentially causing
incomplete solder coverage. If you suspect this has occurred, disassemble the
joint, clean and repeat the process using proper heating techniques.
13.2.1.4 Proper Cool Down
Because zero lead alloys have a lower thermal conductivity than standard
alloys they do not cool down as quickly after making a solder connection.
If excessive heating has occurred and an accelerated cooling process is
required, apply a damp cloth to the freshly completed solder joint. This
will help minimize the risk of the solder joint moving or leaking solder out
of the joint before the joint can cool.
13.3 Threaded Connections
The Viega PureFlow system also provides 󶈵ttings to adapt Viega
PureFlow PEX tubing to NPT threads.
In addition to the NPT drop-ear elbows already mentioned, metallic
male and female adapters and male NPT elbows provide threaded
connections.
The threaded connection should always be made before the PEX
connection to avoid twisting the PEX connection.
CAUTION!
Do not use metallic threaded adapters when connecting to
polymer threads.
Male Adapters
Female Adapters
NPT Elbows Adapters