Copper Pipe Hangers and Galvanic Reaction
Improper hangers used for copper piping. This has a potential for galvanic corrosion though it most likely not happening.
” Galvanic corrosion is caused by self-induced current created by electrical potential of two dissimilar metals in contact with an electrolyte. “
Fresh water is typically free of a lot of minerals making it a weak electrolyte as compared to salt water or other electrolytes used, such as in a battery. The issue is that you must use hangers approved for the material being supported.
2015 IPC
308.3 Materials.
Hangers, anchors and supports shall support the piping and the contents of the piping. Hangers and strapping material shall be of approved material that will not promote galvanic action.
2015 UPC
313.2 Material.
Hangers and anchors shall be of sufficient strength to support the weight of the pipe and its contents. Piping shall be isolated from incompatible materials.
2016 California Plumbing Code
313.2 Material
Hangers and anchors shall be of sufficient strength to support the weight of the pipe and its contents. Piping shall be isolated from incompatible materials.the piping. Hangers and strapping material shall be of approved material that will not promote galvanic action.
If you find any errors or have additional information that would expand on any code, building standards or manufacturer requirements please let me know.
NCW Home Inspections, LLC is a Licensed Washington State Home Inspection service located in Wenatchee Washington serving Chelan County, Douglas County, Kittitas County, Okanogan County and Grant County Washington and the cities of Wenatchee, Leavenworth, Cashmere, Oroville, Cle Elum, East Wenatchee, Quincy and many more…
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Coordinator & Instructor- Fundamentals of Home Inspection- Bellingham Technical College
Former WA Home Inspector Advisory Licensing Board
www.ncwhomeinspections.com 509-670-9572
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