"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.