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Home » Viega PureFlow PEX Pipe and Fittings

Viega PureFlow PEX Pipe and Fittings

August 2, 2019
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Viega PureFlow PEX Pipe and Fittings

Viega PureFlow PEX pipe and fittings have been listed by Underwriter Laboratories (UL) as approved for use in exposed fire sprinkler systems in basements. The UL listings mean builders and contractors are now able to use PureFlow, Viega’s versatile system of PEX pipe and fittings, throughout an entire residential fire sprinkler system. The listing eliminates the need for contractors who have used PureFlow PEX throughout a house to have to join it to pipe of another material in the basement.

The listings cover two types of ceiling. PureFlow can be installed and left exposed in wood joist ceiling assemblies where the following conditions are met:

  • Joists are of dimensional lumber, engineered wood, wood I-joist or open web wood joists (wood floor trusses)
  • Joists are of depths from 6 to 16 inches 
  • Joists are of spacing from 12 to 24 inches on center
  • Joists can be exposed after installation
  • Metal pipe hangers spaced at maximum 24 inches on center are used
  • Listed residential automatic sprinklers of maximum activation temperature rating of 165 degrees Fahrenheit 

PureFlow can be installed exposed across finished ceiling assemblies where the following conditions are met:

  • Ceiling is finished with one of the following approved membranes:
  1. Minimum 3/8-inch thickness code-complying gypsum wallboard or;
  2. Suspended membrane ceiling with lay-in panels or tiles having a minimum weight of 0.35 pounds/feet2  when installed with metallic support grids or;
  3. ½-inch code-complying plywood or solid sheathing
  • Metal pipe hangers spaced at maximum 24 inches on center are used
  • Listed residential automatic sprinklers of maximum activation temperature rating of 165 degrees Fahrenheit 

PureFlow is the PEX fire sprinkler system of choice for builders and retrofitters for its ease of installation, corrosion-free qualities and dependability. It’s the only PEX fire sprinkler system with an easy alignment bracket that eliminates the need for measuring when hanging pendants.

Viega

www.viega.us

Products Fire Protection Fire Sprinklers Fittings Pipe Plumbing PVF PEX Pipe
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