Install Instructions

Product Information
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IM-PF 724596 1021 PureFlow Water System (EN)
PEX tubing with a printed rating of 5306 indicates that it will be suitable
for installation areas of constant hot water circulation and has a maximum
UV exposure of six months.
The UV protection rating is important because certain construction
practices and storage conditions subject PEX tubing to sunlight exposure
for an extended period of time. UV testing con󶈵rms the longevity of the
PEX tubing under various lengths of UV exposure.
Property 0 1 2 3 4 5 6
Chlorine
Resistance
Not
tested
75% at 73°
and 25% at
140° F
Reserved
50% at 73°
and 50% at
140° F
Reserved
100% at
140° F
Minimum UV
Resistance
Not
tested
1 month 3 months 6 months
HDS for
water at
73° F
630
Viega’s silane crosslinked PEX (PEX-b) has the highest chlorine and UV
resistance per this rating (PEX 5306). Another bene󶈵t is it has higher burst
pressures than peroxide crosslinked PEX (PEX-a). This is due to the three-
dimensional molecular bonding that occurs during the crosslinking process.
2.4 System Concepts
Viega PureFlow is a high-quality, 󶈶exible PEX system for hot and cold
potable water distribution.
The Viega PureFlow plumbing system o󶈴ers maximum security thanks
to press and full-circle crimp 󶈵tting techniques. These 󶈵ttings ensure the
plumber quick installation, suitability for use in all types of applications at
the construction site and vast reductions in the required number of 󶈵ttings
and necessary installation time.
The systems incorporate:
■ Viega PureFlow PEX tubing: red, white, blue, and black cross-linked
polyethylene tubing designed with superior chlorine and UV resistance
■ Viega PureFlow PEX Black tubing (¾" - 2"): UL 1821 listed for use in
multipurpose one- and two-family 󶈵re sprinkler systems per NFPA 13D
■ A range of zero lead bronze, Eco Brass
®
, or polymer 󶈵ttings for
PureFlow Press and PureFlow Crimp 󶈵tting systems
■ Viega ManaBloc distribution system for use with Viega PureFlow PEX tubing
■ A range of inline, manifold, and stop valves for Viega PureFlow 󶈵tting systems
■ Viega press tools and jaws for the PureFlow Press 󶈵tting systems
■ Viega crimp tools for the PureFlow Crimp 󶈵tting systems