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

On Jul 31, 11:14*pm, "Tom" wrote:
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?

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

R

On Jul 31, 10:14*pm, "Tom" wrote:

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

"Tom" wrote in message ...
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

"Joe" wrote in message
...
On Jul 31, 10:14 pm, "Tom" wrote:

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.

"Bob Wheatley" wrote in message
...
"Tom" wrote in message
...
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

"Bob Wheatley" wrote in message
...
"Tom" wrote in message
...

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


Hope that clears that up.

ok

Abe wrote:
....
Bob's correct. A dielectric union is the only legit way to mate copper
and galvanized.

Actually, I saw a new one (to me, IANAP) relatively recently -- similar
problem; old galvanized in very difficult to access location in service
tunnel in old church building. Local plumber had a compression-type
fitting designed for the purpose of threadless connection to galvanized.

I don't recall the specific brand name but it works and is designed
specifically for the purpose. It is comparatively pricey relative to an
ordinary dielectric union, however, but in a situation as we had the
labor to manage to thread the other or remove even more back to a next
joint would far outweigh the cost of the part. (Of course, one of these
days, the whole thing will have to come out, but that's a story for
another day; hopefully after I'm no longer on Trustees ).

So, I think the answer to the original question is "it depends, either
technique can be ok if it's the right product".

--

On Aug 1, 9:46�am, dpb wrote:
Abe wrote:

...

Bob's correct. A dielectric union is the only legit way to mate copper
and galvanized.

Actually, I saw a new one (to me, IANAP) relatively recently -- similar
problem; old galvanized in very difficult to access location in service
tunnel in old church building. �Local plumber had a compression-type
fitting designed for the purpose of threadless connection to galvanized.

I don't recall the specific brand name but it works and is designed
specifically for the purpose. �It is comparatively pricey relative to an
ordinary dielectric union, however, but in a situation as we had the
labor to manage to thread the other or remove even more back to a next
joint would far outweigh the cost of the part. �(Of course, one of these
days, the whole thing will have to come out, but that's a story for
another day; hopefully after I'm no longer on Trustees ).

So, I think the answer to the original question is "it depends, either
technique can be ok if it's the right product".

--

boy I woul;d replace all the galvanized, PEX is cheap and easy to work
with.

patching glavanized is a loser.

eventually whats left either clogs or leaks.

way better to replace the galvanized and get on wuth your life

wrote:
....

way better to replace the galvanized and get on wuth your life

Well, if you want to come do this nobody will stop you and will be glad
to hand you stuff if you can get there to do it...but you had best be
skinny and flexible.

--

On Thu, 31 Jul 2008 23:14:32 -0400, Tom wrote:
What is the preferred method for joining galvanized pipe to copper pipe?
duct tape

"What is the preferred method for joining galvanized pipe to copper
pipe?"

Only one answer to the question here and Bob gave it.

kenny b

"Bob Wheatley" wrote in message
news:sMwkk.261373

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


Hope that clears that up.


I second Bob's contention.

The reason you want a dielectric union is that it will prevent corrosion
from eating your pipes.

If a person calls himself a plumber and suggests otherwise, thank him for
stopping by but inform him that you will hire a competent pro to do the job.

--
Roger Shoaf
If you are not part of the solution, you are not dissolved in the solvent.

"Abe" wrote in message
...


Bob's correct. A dielectric union is the only legit way to mate copper
and galvanized.

He used some sort of threaded fitting that includes a brass fitting. I
wonder if that's a dielectric fitting?

I9t appears he did a nice job cutting out the old leaking galvanized pipe
then replacing it w/ copper.
However, the galvanized pipe is leaking in another place. When I called
thewm back they recommended replacing all the galvanized(tub, sink and
toilet in the bathroom w/ copper pipe then connecting them to the all
copper pipe in the the basement = cost $1,200.00. They also said it might
be cheaper to use some sort of PVC pipe instead of copper, which would be
less money then the copper, but I'm concerned about the durability of the
PVC type.

wrote in message
...
On Aug 1, 9:46?am, dpb wrote:
Abe wrote:
boy I woul;d replace all the galvanized, PEX is cheap and easy to work
with.

patching glavanized is a loser.

eventually whats left either clogs or leaks.

way better to replace the galvanized and get on wuth your life

He gave me a piece of the old galvanized pipe and couldn't see daylight
through it. Kinda like my arteries.
I am going to have the galvanized replaced w/ copper or some sort of PVC.
I'll find out from the plumber the correct name of the PVC, What is PEX?

"Roger Shoaf" wrote in message
...

"Bob Wheatley" wrote in message
news:sMwkk.261373

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


Hope that clears that up.


I second Bob's contention.

The reason you want a dielectric union is that it will prevent corrosion
from eating your pipes.


I think that's what he used.