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Author Topic: Standard copper unions or dielectric?  (Read 4025 times)

Gunpowder

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Re: Standard copper unions or dielectric?
« Reply #15 on: October 13, 2017, 07:21:45 AM »

M for heat, L for domestic water.

your reversed on this.  My research, Copper M is for general residential use. domestic water, in the wall, etc. It is thinner.  Copper L is for commercial and hot water systems. It is thicker. This is probably the better choice for our systems.

Incidentally Copper L is also used to plumb air compressors in automotive shops as well. There is special stress solder that is recommended to thwart cracks in solder from vibrations of the compressor.



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