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
Tubing Overview
19
PG-PF 724998 0320 PureFlow System
Viega PureFlow PEX tubing is available
with a exible polypropylene corrugated
sleeving that is pre-installed on Viega
PureFlow PEX red and blue 300-foot coils
in ½" and ¾" sizes. This sleeved PEX
product is ideal for direct burial and/or
cast in cement applications.
Properties and Performance
Linear Expansion Coecient:
1.1 inch per 100 feet per 10°F
Temperature and Pressure Ratings:
180°F at 100 psi
73.4°F at 160 psi
UV Resistance:
Maximum exposure 6 months
Chlorine Resistance:
PEX 5306 – end-use condition of 100%
at 140°F (approved for continuous
domestic hot water circulation systems)
Bend Radius:
Viega PureFlow PEX can be easily bent
by hand or with the use of Viega-
approved bend supports to a radius as
small as ve times tubing outer diameter.
PureFlow PEX Tubing Markings
Viega PureFlow PEX tubing is marked
every ve feet with the following
representative information.
Print Line Markings
Length Marker 000 feet
Company Viega
Product Name Viega PureFlow PEX
Nominal Tubing Size ½"
Standard Dimension
Ratio Tube Size
SDR 9 CTS
(copper tube size)
Material Designation Code
PEX 5306
Temperature &
Pressure Rating
100 psi @ 180F
160 psi @ 73F
NSF Listing (Potable) cNSF
®
us-pw
NSF Chlorine Listing CL5
ASTM Tubing
Standards Certication
F876, F877
Canadian Standard Assoc
CSA B137.5
Fittings System
Compatibility
PureFlow - ASTM
F877, F1807, F2159,
F3347, F3348
IAPMO Listing UPC
®
UL Listing Rating*
cULus 3SAV
UL1821
130 psi @ 120F
Plenum Rating**
FS/SD 25/50
ASTM E84
CAN/ULC S102.2
Fire Resistance
Ratings
CAN/ULC S101
ANSI/UL 263,
UL 2846
ICC Listing ES-PMG
™
- 1038
AWWA Listing C904
HUD Listing MR 1276
Manufacturer’s Date Code
1/1/2010
Material Code X14.2
Country of Manufacture
Made in the USA
* ¾" through 2" Black Viega PureFlow PEX only
** 2" and smaller tube sizes when wrapped with
½" - 1" thick E84 rated insulation, ½" and smaller
with no insulation per ULC S102.2 listing. Tubing
may include tting connections when wrapped.
PureFlow PEX Tubing with Corrugated Sleeving