You don t need to wrap plumbing tape around the union before you screw it together.
Galvanized pipe to copper transition.
Cut copper pipe just above the corroded connection using a tubing cutter.
If the surface of the pipe is the color of a penny then the pipe is probably made from copper.
The inside of galvanized pipes gets thinner over the years.
If the copper and galvanized pipes aren t the same diameter solder a reducing coupling to the copper pipe.
Solder the brass half to the copper pipe thread the steel half onto the galvanized steel pipe with teflon tape then join the two together tightly with the joining nut.
When water flows through pipes of two different metals the pipes will become eroded by electrical impulses from the slight acidity found in all water sources.
The fitting is generally made of galvanized steel and bronze.
The reaction creates scale which will eventually clog the pipe.
The problem with galvanized pipe is that it reacts with the minerals in the water supply.
Find the area where pipes enter your home and carefully scratch the pipe with a nickel.
Tighten first with pliers then with pipe wrench.
Making the connection between plastic pipes such as abs or.
Wrap threads on end of the steel pipe with teflon tape.
It might be a transition from threaded galvanized water pipes to copper pipes or from old cast iron sewer lines to today s abs.
Benefits of galvanized pipes.
Use two pipe wrenches to loosen the old union.
Eventually galvanized pipe will have to be replaced and when that happens your choices are to replace it with more galvanized pipe copper pipe or plastic pipe.
Remove the old union from the steel pipe.
Install the lower half of the dielectric union to steel pipe.
Galvanized steel pipes on the other hand are a steel gray color.
Plastic pipes are usually black and clamps should be visible.
And the male ends where the threads were cut into can become so thin that they leak when you try to screw on a new female fitting over the end of them.
This fitting joins a copper pipe to a galvanized pipe called a union.
This eventually causes pipe degradation and leakage.
