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
10
PG-PF 724998 0320 PureFlow System
PureFlow Press
Viega PureFlow Press ttings allow
installers to make secure press
connections in less than seven seconds.
With Viega press technology, pressure
testing can be completed immediately
after connections are made.
Viega PureFlow Press ttings are
approved for potable water and hydronic
heating applications. They are available
in sizes ranging from ⅜" through 2"
in both Zero Lead and high-grade
polymer materials and include a factory-
assembled, stainless steel sleeve with
three viewing holes and a tool locator ring
to ensure a proper press connection.
The following design criteria make Viega
PureFlow Press ttings ideal for use in
potable water applications:
■ High corrosion resistance
■ Excellent strength properties
■ Resistant to stress corrosion
■ Superior wear properties
■ Compatible with all materials
PureFlow Press Zero Lead Bronze
Viega PureFlow Press Zero Lead bronze
ttings are manufactured from a high-
quality Zero Lead material specically
designed for press technology meeting or
exceeding all manufacturing requirements.
PureFlow Press Polymer
Viega PureFlow Press polymer ttings are
manufactured from Radel R
®
and incorporate
the Viega Smart Connect technology.
PureFlow Press Fittings
PureFlow Press Fitting Markings
Each Viega PureFlow Press tting is
marked where space permits with the
following information:
Manufacturer VIEGA
ASTM Standard
ASTM F877, F3253, F3347,
F3348
Temperature Rating
180°F (potable),
200°F (hydronic heating)
Certications
cNSF
®
us pw-G, CSA B137.5,
UPC
®
or UP Code, cULus
®
,
ICC-ES PMG™ 1038 / 1015
Note: All ttings may not be listed with each organization shown.
WARNING!
Use only Viega stainless steel
attached PureFlow Press
sleeves and press tools with
Viega PureFlow Press ttings.
Viega PureFlow Press polymer ttings
must be protected from UV exposure,
which can damage them. In the event
of incidental UV exposure during
storage, installation, and handling,
combined exposure of PureFlow Press
ttings shall not exceed 15 days.
Do not expose Viega products to
any foreign substance that includes
but is not limited to VOC (volatile
organic chemical) compounds,
paints, solvents, glues, cleaners, and
disinfectants. Viega products that are
exposed to these types of substances
are at risk of having failures (leaks).