How do you connect copper pipe to galvanized pipe?

Asked By: Yelina Beuck | Last Updated: 16th April, 2020
Category: hobbies and interests jewelry making
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The easiest way to connect the copper and galvanized pipes is to use your wrench and unscrew the galvanized piece from the connecting threads. Next, connect copper pipes together until you reach the galvanized pipe threads.

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Likewise, people ask, what fitting is required for copper with galvanized pipe?

Most newer water heaters have dielectric unions pre-installed on the inlet and outlet ports, but older ones may simply have galvanized fittings. Installing a dielectric union to join these, as well as other galvanized pipes in your house, to copper requires both wrench and soldering work.

Secondly, will Sharkbites work on galvanized pipe? 1 Answer. The actual SharkBite push to connect fittings are not designed to press onto galvanized pipe. For mating your PEX to galvanized, SharkBite makes a threaded to press fit transition adapter. You will need to square cut the end of your galvanized pipe and then rethread it.

In this regard, how do I convert galvanized pipe to copper?

Add a new galvanized steel pipe length (nipple) at each end and solder in your copper. (Use sandpaper as needed for cleaning pipe.) Then take the union apart and solder the brass end to the copper and screw the steel end to the galvanized pipe. Finally, join the two ends with the large nut.

Can you mix copper and galvanized pipe?

Galvanized pipes should not be connected directly to copper pipes, period. The only time one can successfully replace a section of galvanized pipe with a section of copper is to make use of a dielectric union to ensure the metals do not have direct contact. Brass is an alloy of copper and nickel.

37 Related Question Answers Found

Can galvanized and copper touch?

If an installation requires contact between galvanized materials and copper or brass in a moist or humid environment, rapid corrosion of the zinc may occur. Even runoff water from copper or brass surfaces can contain enough dissolved copper to cause rapid corrosion.

What happens when copper pipe touching galvanized pipe?

Whenever you join copper water lines to galvanized steel pipe, you should be concerned about the corrosion caused by joining two dissimilar metals, called “galvanic corrosion.” An electrochemical reaction occurs that causes the steel pipe (in this case) to rust and clog up.

Is copper pipe better than galvanized?

Copper pipe is available in small diameters for installation in tight spaces. Copper plumbing is lead-free, making it safer than galvanized pipe. Copper pipes are biostatic and inhibit the growth of bacteria. Copper plumbing requires less maintenance and fewer repairs over time and is naturally resistant to corrosion.

Can you connect copper to black pipe?

Yes electrolysis is a problem. You should not connect black pipe to copper. Best to use a brass fitting in between or a a special fitting that will electrically isolate the steel from the copper.

Can you join copper pipe to plastic pipe?


You can connect PVC or CPVC to copper in several ways. One common method is to solder a female threaded fitting onto the copper pipe, screw in a male threaded plastic fitting and finish up by gluing plastic pipe to the plastic fitting. The best and most safe option is to use a copper-to-plastic adapter.

What happens when copper touches metal?

Galvanic corrosion is caused by self-induced current created by electrical potential of two dissimilar metals in contact with an electrolyte. It can occur when two dissimilar metals (such as copper tube and steel pipe) are connected in the presence of an electrolyte.

Can you use brass fittings with galvanized pipe?

Galvanized pipe and brass pipe are both used for water piping systems. For example, you may need to connect a brass barb to your galvanized pipe system, since galvanized barb fittings can be difficult to find.

What metal can touch copper?

It is not necessary to isolate copper from lead, tin or stainless steel under most circumstances. The principal metals of concern in terms of direct contact are aluminum and zinc.

Can you mix galvanized and black pipe?

Black pipe and galvanized pipe are the same material with just one difference: galvanized pipe is coated with zinc to prevent the underlying steel from corroding. Black pipe can be used in lieu of galvanized pipe as long as the piping system isn't for drinking water.

Can you connect galvanized pipe to PVC?


If you end up having to transition from a male threaded pipe, use a galvanized coupling to create a female connection before making the transition to plastic. Once the adapter is tight, glue a pipe into the other end, and you're ready to run the rest of your PVC or CPVC pipe system.

Can you use stainless steel fittings on copper tubing?

Brass is for use with copper tubing, and stainless steel is for use with stainless steel tubing. For example, a ¼” compression fitting is designed to connect a section of tubing which has an OD of ¼”. When the nut (which contains the ferrules) is tightened, it compresses the ferrules onto the tubing to make the seal.

How do you connect galvanized pipe to PEX pipe?

Fit the adapter to the existing pipe first.
Whether the adapter fitting is threaded on galvanized pipe or soldered to copper, make the connection to the existing pipe first. Then slip the ring on the PEX tubing, and fit the PEX over the male end of the adapter.

Can stainless steel be in contact with galvanized steel?

The stainless steels, including 304 and 316, are more positive than zinc and steel, so when stainless steel is in contact with galvanised steel and is wet, the zinc will corrode first, followed by the steel, while the stainless steel will be protected by this galvanic activity and will not corrode.

Can you solder galvanized pipe?

Galvanized steel has poor thermal characteristics but can still be soldered using the proper steps. Lead coated copper should be soldered with 60/40 lead tin solder.

How do you solder copper pipes?


  1. Prepare Inside of Fitting. Ream the inside of each fitting with a wire brush.
  2. Clean Outside Of Pipe. Use emery cloth or steel wool to clean the outside of the pipe.
  3. Apply Flux to Pipe.
  4. Unwind Solder Wire.
  5. Heat the Fitting to Sweat the Copper Pipe.
  6. Touch the Solder to the Pipe.
  7. Remove Flame from Fitting.
  8. Clean the Fitting.

Can you use a compression fitting on galvanized pipe?

BONFIX steel galvanized compression fittings are used in combination with standard commercially available thin-walled steel galvanized pipes. The fittings can be implemented in an operating environment with a temperature range of: 0 °C to +90 °C and a maximum peak temperate of +120 °C.

Can you join copper to steel?

Soldering, Brazing, and Welding Tips. Soldering with a propane torch is the easiest way to join copper and brass. You can even use solder to join copper or brass to stainless steel, you just need the proper flux. Use a liquid flux instead of a paste flux.