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
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PG-PF 724998 0320 PureFlow System
Table of Contents
Introduction _____________________________________________________ 6
Viega PureFlow Systems ______________________________________ 6
Smart Connect
®
Technology ___________________________________ 6
Codes, Standards, and Certications _____________________________ 7
Specifying PureFlow Systems __________________________________ 7
Codes _____________________________________________________ 7
Standards __________________________________________________ 7
Certications ________________________________________________ 7
Fire Resistant Construction ____________________________________ 8
PureFlow Press Fittings _________________________________________ 10
PureFlow Press _____________________________________________ 10
PureFlow Press Zero Lead Bronze ________________________ 10
PureFlow Press Polymer ________________________________ 10
PureFlow Press Fitting Markings ______________________________ 10
PureFlow Crimp Fittings ________________________________________ 11
PureFlow Crimp ____________________________________________ 11
PureFlow Crimp Eco Brass Fittings _______________________ 11
PureFlow Crimp PolyAlloy Fittings ________________________ 11
PureFlow Crimp Fitting Markings ______________________________ 11
PureFlow Tools _________________________________________________ 12
PureFlow Press Hand Tools___________________________________ 12
PureFlow Press Power Tools __________________________________ 12
PureFlow Crimp Hand Tools __________________________________ 13
Product Instructions ____________________________________________ 14
Viega PureFlow Press Hand Tool ______________________________ 14
Viega PureFlow Press Power Tool _____________________________ 15
Viega PureFlow Crimp Hand Tool ______________________________ 16
Tubing Overview _______________________________________________ 17
PureFlow PEX Tubing ________________________________________ 17
Properties and Performance _____________________________ 17
PureFlow PEX Tubing Markings __________________________ 17
FostaPEX
®
Tubing ___________________________________________ 18
Properties and Performance _____________________________ 18
FostaPEX Tubing Markings ______________________________ 18
PureFlow PEX Tubing with Corrugated Sleeving __________________ 19
Properties and Performance _____________________________ 19
PureFlow PEX Tubing Markings __________________________ 19
Design Considerations __________________________________________ 20
General System Sizing and Calculations ________________________ 20
Viega PureFlow Press Friction Loss _______________________ 20
Viega PureFlow Crimp Friction Loss _______________________ 20
Viega PureFlow PEX Tubing Flow Velocity __________________ 21
Viega PureFlow Pressure Loss ___________________________ 22