User Guide

Installing PureFlow Systems
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PG-PF 724998 0320 PureFlow System
Fastening the PureFlow System
Wood Frame Construction
Viega PureFlow PEX and FostaPEX
tubing are ideal for use in wood frame
construction. The ability to bend the
tubing around corners and obstacles
greatly simpli󶈵es installation. This system
eliminates the expensive and time-
consuming use of 󶈵ttings where tubing
turns within a wall, and it eliminates the
potential 󶈵re hazard of soldering close to
exposed framing members.
A few rules should be followed when
running Viega PureFlow PEX tubing in
wood frame construction:
■ Use nailing plates to protect the tubing
from nails and screws where it passes
through studs.
■ Suspension clips are required for metal
studs and optional for wooden studs.
■ When turning tubing sharply to exit
from a wall, a bend support must
be used. Either use a drop-ear bend
support, drop-ear elbow, or a stub out.
Neglecting to use a support will place
excessive stress on the 󶈵tting, and the
tubing will not exit perpendicular to the
wall (except FostaPEX).
Steel Construction
The Viega PureFlow system works as well
in steel frame construction as it does in
wood. Where tubing runs through metal
studs, suspension clip fasteners must be
used to protect tubing from sharp stud
edges (see illustration below). Follow
the same guidelines for fastening and
supporting the tubing as for wood frame
construction.
Suspension clip fasteners used to protect tubing
from abrasion when passing through steel studs