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How to Join Galvinized Pipe to Copper Pipe?

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How to Join Galvinized Pipe to Copper Pipe? Tom 07-31-2008
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Posted by Tom on July 31, 2008, 11:14 pm


What is the preferred method for joining galvanized pipe to copper pipe?
One plumber told me he would thread the galvianized pipe the apply a fitting
that would connect the copper pipe to the galvanied pipe and another plumber
told me he had a fitting he would use that didn't require threading the
galvanized pipe to connect copper pipe to it.

Does it matter which one is used?

Are the solderless copper fittings good that join copper pipes?

Thanks



Posted by RicodJour on August 1, 2008, 12:09 am


> What is the preferred method for joining galvanized pipe to copper pipe?
> One plumber told me he would thread the galvianized pipe the apply a fitt=
ing
> that would connect the copper pipe to the galvanied pipe and another plum=
ber
> told me he had a fitting he would use that didn't require threading the
> galvanized pipe to connect copper pipe to it.
>
> Does it matter which one is used?
>
> Are the solderless copper fittings good that join copper pipes?

http://www.rd.com/familyhandyman/content/32499/

R

Posted by Joe on August 1, 2008, 12:11 am


>
> Are the solderless copper fittings good that join copper pipes?

Depends on what the fluid is. For water, not very common, but
sometimes necessary in replacing inoperative main household valves.
Fittings for lube oil, compressed air and air conditioning lines are
often solderless. For household water service soldered copper is
preferred, might even be code required in some areas. Connecting
galvanized to copper is often done using a simple copper threaded
sweat fitting to the threaded pipe. Some communities allow natural gas
and propane to use copper lines, usually with solderless connectors,
and the low pressures allow fairly simple fittings. IMO. the plumber
who threads the galvanized pipe is likey to produce the best job. HTH

Joe

Posted by Tom on August 1, 2008, 6:51 am



>
> Are the solderless copper fittings good that join copper pipes?

Depends on what the fluid is. For water, not very common, but
sometimes necessary in replacing inoperative main household valves.
Fittings for lube oil, compressed air and air conditioning lines are
often solderless. For household water service soldered copper is
preferred, might even be code required in some areas. Connecting
galvanized to copper is often done using a simple copper threaded
sweat fitting to the threaded pipe. Some communities allow natural gas
and propane to use copper lines, usually with solderless connectors,
and the low pressures allow fairly simple fittings. IMO. the plumber
who threads the galvanized pipe is likey to produce the best job. HTH


This is for replacing an old piece of galvanized cold water supply pipe.




Posted by Bob Wheatley on August 1, 2008, 1:01 am


> What is the preferred method for joining galvanized pipe to copper pipe?
> One plumber told me he would thread the galvianized pipe the apply a
> fitting that would connect the copper pipe to the galvanied pipe and
> another plumber told me he had a fitting he would use that didn't require
> threading the galvanized pipe to connect copper pipe to it.
>
> Does it matter which one is used?
>
> Are the solderless copper fittings good that join copper pipes?
>
> Thanks
>


Dielectric union. Period.
The galvanized side is threaded. Period.
The copper side is soldered. period.


Hope that clears that up.


Bob Wheatley


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