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Posted by Eigenvector on April 14, 2007, 3:44 pm
> I can't find a good reference for this. Does anyone know what PEX tubing
> is
> rated for so far as water pressure is concerned?
>
> At my house I have a pretty varied range of water pressures, talking to my
> neighbor who happens to work for the water district, he indicates that we
> get about from 30 to 75 psi from our lines depending upon the time of day.
> Considering the dramatic increase in water pressure after replacing my hot
> water lines, I can only imagine what it would be like once the cold water
> lines are replaced (it's all galvanized).
>
> I know pressure reducers and pressure regulators can be installed, but it
> seems like 80 psi is the breaking point for that type of installation -
> although I've heard that high water pressure can wear out fixtures faster,
> and my neighbors have had that experience.
Aquapex meets ASTM F876 and F877, and is certified to NSF standards 14
and 61. It is rated by the PPI : 200°F at 80 psi, 180°F at 100 psi,
and 73.4°F at 160 psi.
http://www.pexsupply.com/categories.asp?cID=25&brandid=
cheers
Bob
Oooohh, that's cutting it pretty damn close.
Sounds like in a PEX environment keeping water pressure at 60psi or lower
would give a much better factor of safety.
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