User Guide
Table Of Contents
- Introduction
- Codes, Standards, and Certifications
- PureFlow Press Fittings
- PureFlow Crimp Fittings
- PureFlow Tools
- Product Instructions
- Tubing Overview
- Design Considerations
- ManaBloc Systems
- Installing PureFlow Systems
- Storage Recommendations
- Handling Viega PureFlow PEX Tubing
- Removing PureFlow Connections
- Repairs
- Freezing
- Water Heaters
- Heaters, Flues, Vents, and Recessed Lights
- Fastening the PureFlow System
- Supporting PureFlow PEX Tubing
- Installation Considerations
- Noise and Water Hammer
- Shower Valves
- Electrical Grounding
- Expanding Foams
- Fire Stop Compounds
- Tubing Expansion
- Calculating Expansion Loops and Offsets
- Domestic Hot Water Circulating Systems
- Installing Viega PureFlow Fittings
- PureFlow PEX Tubing Installed in Slab
- Installing PEX Under a Slab
- Installing PEX Below Grade as Service Line
- Pressure Testing PureFlow Systems
- System Disinfection
- Limited Warranty
58
PG-PF 724998 0320 PureFlow System
Viega PureFlow Water System
Subject to the conditions and limitations in
this Limited Warranty, VIEGA LLC (Viega)
warrants to the owner of applicable real
property in the United States (including its
territories) and Canada that the components
in its PureFlow Plumbing System (as
described below) when properly installed by
licensed plumbers in potable water systems,
under normal conditions of use, shall be free
from failure caused by manufacturing defects
for a period of twenty-ve (25) years from
date of installation.
The Viega PureFlow Plumbing System and
components covered by this twenty-ve
(25) year warranty are:
Viega PureFlow cross-linked polyethylene
(PEX) tubing or PureFlow FostaPEX®
tubing installed with PureFlow Press
ttings in metal or polymer and PureFlow
Press sleeves sold by Viega installed as
a system.
Viega PureFlow cross-linked polyethylene
(PEX) tubing and ASTM F1807 metal crimp
insert ttings sold by Viega and ASTM F2159
PolyAlloy crimp ttings sold by Viega installed
with copper crimp rings as a system.
Viega warrants that ManaBloc®, MiniBloc
or polymer or metallic manifolds, and their
approved connections, sold by Viega and
installed as a manifold plumbing system
under normal conditions of use, shall be free
from failure caused by manufacturing defects
for a period of ten (10) years from date of
installation.
Power tools and jaws used with PureFlow
Press ttings are warranted by the
manufacturer and Viega extends no separate
warranty on those tools or jaws. Viega
warrants that PureFlow Press hand tools
sold by Viega, under normal conditions of
use, shall be free from failure caused by
manufacturing defects for a period of two
(2) years from date of sale. Viega warrants
that PureFlow Crimp hand tools and
tubing cutters sold by Viega, under normal
conditions of use, shall be free from failure
caused by manufacturing defects for a period
of twelve (12) months from date of sale.
Viega warrants that properly installed
PureFlow valves, PureFlow lav and closet
risers and riser accessories manufactured
and/or sold by Viega shall be free from failure
caused by manufacturing defects for a period
of two (2) years from date of installation.
Viega does not extend any warranty on its
components used in systems with tubing,
ttings, manifolds, or press sleeves not
sold by Viega or installed by other than a
licensed plumber. In addition, the warranty
does not apply if distribution lines and their
connections to manifold plumbing systems
sold by Viega are not Viega Pureow PEX
or PureFlow FostaPEX tubing or approved
connections sold by Viega.
Connection to non-Viega plumbing products
intended for riser and/or water service
applications does not void the system
warranty provided all pipe, ttings, valves
and manifolds are sold by Viega after the
transition location.
Termination connections to non-Viega
end-use devices or equipment such as
ltration, water softeners, shower valves,
faucets, stops and other such devices, when
utilizing Viega PureFlow PEX and PureFlow
FostaPEX does not void the system warranty
as described.
Under this limited warranty, you only have
a right to reimbursement if the failure or
leak or resulting damage resulted from
The following warranty does not cover re protection and motor
home / RV applications. For warranty information on these and other
applications, refer to applicable warranty.
Limited Warranty










