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Is PEX okay for h/w-radiator heating system?

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Is PEX okay for h/w-radiator heating system? BETA-32 11-07-2007
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Posted by BETA-32 on November 7, 2007, 10:25 am
Can PEX piping be used for a cast iron hot water radiator heating system?

Right now, the system is a combination of original galvanized steel pipes
and more recently added copper lines. I am just wondering if when moving
the location of a couple of the radiators for a remodel job, can I use PEX
to reconnect the radiators at their new locations?



Posted by ransley on November 7, 2007, 11:34 am
> Can PEX piping be used for a cast iron hot water radiator heating system?
>
> Right now, the system is a combination of original galvanized steel pipes
> and more recently added copper lines. I am just wondering if when moving
> the location of a couple of the radiators for a remodel job, can I use PEX
> to reconnect the radiators at their new locations?

dumb idea, and its not code.


Posted by Bob F on November 7, 2007, 11:46 am

>> Can PEX piping be used for a cast iron hot water radiator heating system?
>>
>> Right now, the system is a combination of original galvanized steel pipes
>> and more recently added copper lines. I am just wondering if when moving
>> the location of a couple of the radiators for a remodel job, can I use PEX
>> to reconnect the radiators at their new locations?
>
> dumb idea, and its not code.
>

I've seen PEX used to supply hot water to wall heaters in new construction. This
obviously passed inspection in Seattle.

O.P. - contact your local inspector for the final word.

Bob



Posted by Edwin Pawlowski on November 7, 2007, 12:25 pm

> Can PEX piping be used for a cast iron hot water radiator heating system?
>
> Right now, the system is a combination of original galvanized steel pipes
> and more recently added copper lines. I am just wondering if when moving
> the location of a couple of the radiators for a remodel job, can I use
> PEX to reconnect the radiators at their new locations?

Check with the manufacturer. Some have a temperature limit below what your
radiator may be.



Posted by on November 7, 2007, 12:49 pm
> Can PEX piping be used for a cast iron hot water radiator heating system?
>
> Right now, the system is a combination of original galvanized steel pipes
> and more recently added copper lines. I am just wondering if when moving
> the location of a couple of the radiators for a remodel job, can I use PEX
> to reconnect the radiators at their new locations?

Yes, many hybrid hydronic systems are using PEX. they are running at
180F, so no reason you couldn't. I would want to verify the specs on
the pex tubing though.


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