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Old 04-04-2012, 11:56 AM   #1
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CPVC (or pex) + pressure


I have an idea to set up a 3/4" pipe exclusively for exterior uses.
Mostly through the hose bibs but other sprinklers, irrigation and such...
and then another regulator and 3/4" copper for the other uses at 50PSI

The question/concern I have is about the static pressure strength of pipe choices.
According to the city I might have as much as 110 PSI before the regulator.
(At present there is 70PSI after the regulator)
---

As I really don't want to have a flood in my soon to be finished basement...
I'm figuring it's a good idea to ask how high I can go before risk of failure.

Anyone know?

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Old 04-04-2012, 12:05 PM   #2
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CPVC (or pex) + pressure


Quote:
Originally Posted by TarheelTerp View Post
I have an idea to set up a 3/4" pipe exclusively for exterior uses.
Mostly through the hose bibs but other sprinklers, irrigation and such...
and then another regulator and 3/4" copper for the other uses at 50PSI

The question/concern I have is about the static pressure strength of pipe choices.
According to the city I might have as much as 110 PSI before the regulator.
(At present there is 70PSI after the regulator)
---

As I really don't want to have a flood in my soon to be finished basement...
I'm figuring it's a good idea to ask how high I can go before risk of failure.

Anyone know?
Regarding PEX, the Uponor installation guide for PEX states 40-60 psi working pressure, 100 psi max pressure while testing for leaks.

HRG

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