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DZR fittings are brass fittings. Brass is an alloy made of copper and zinc.
Zinc costs less than copper.
Therefore, most brass Plumbing fittings and valve these days contain too much zinc, not enough copper.
The safe zinc content for brass is usually around 15%
The problem it creates is called "Dezincification": when a brass alloy contains more than 15% zinc, there is too much zinc to "fit" into the copper matrix (between the copper atoms), therefore the zinc slowly dissolves and leaches out of the part. Visually, you may see a white powder at the surface (zinc oxyde) and very red metal (copper rich brass). The copper rich metal that is left is very porous because it has lost its zinc ! It becomes brittle and weak and brakes eventually.
DZR fittings are garanteed to contain proper amounts of zinc.
Dezincification is nothing new, except that manufacturers play the numbers game and prefer to occasionnally pay for losses and damages when a part fails rather than sell their stuff at a higher price. To them its only a matter of bottom line. To you, it can mean thousands of dollars of damages and hassles.
What else can I help you with?
What does DZR stand for in Plumbing terms?
Dezinctafication process
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What material used in plumbing fitting?
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Is using SharkBite plumbing fittings a bad idea for your plumbing system?
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Who invented sharkbite plumbing fittings?
Cash Acme Corp.
