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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Dacromate for water service

Dear sir or madam

I want to know that can we use dacromate coating proccess to coat products of drink water? for exa. water valve

Mohamadalijavani
- Esfahan, Iran
January 16, 2008

Spelling matters! To my knowledge there is no such thing as dacromate. Please try to track back to where you saw this word and see what it is supposed to mean. But there is a proprietary zinc-rich paint process called Dacromet from Metal Coatings International, and there is a generic chromate conversion coating process which is sometimes called dichromate (which is also the name of the chemical radical Cr2O7--). I don't believe the former is suitable for potable water service, and I know the latter isn't.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
January 23, 2008

If you mean DACROMET, it's not Food contact approved :-(

This is coating that contains chromium, Al and Zn used in automotive metal parts.

J. Pujol
Sant Celoni
SPAIN

Jordi Pujol
- Barcelona, Spain
February 6, 2008

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