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Can use of deionized water in a mixture retard a galvanic reaction?

I am working with a low pressure (500psi) spray process of an industrial coating material. The mixture contains about 25% water. Though I have greatly reduced the amount of galvanic activity by careful conduit material selection (SS), some activity continues. It appears to me that the water is decomposed, causing the coating material within the sealed conduit to cure (think dry) prematurely. I would like to ask if using deionized water would reduce the curing (drying).

Tom Brennan
Lab Technician - Bloomfield, Michigan
2007

On reading your post, I will speculate that the water is picking up carbon di oxide from the air and is reacting with the paint. Talk over the problem with tech services of the original paint manufacturer. If they give you the idiot treatment, look for another vendor that will talk to you. Please do not use the information from the second vendor to solve the first vendor's problem, because when you have another problem they definitely will not provide you with a free service and should not. It is basic business ethics also.

James Watts
- Navarre, Florida
2007

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DI water would accelerate the curing. Try RO instead.

Sheldon Taylor
supply chain electronics
Wake Forest, North Carolina
2007

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Sheldon,
Why do DI and RO water act so differently?

Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK
2007

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When I read your post I got a Deja Vu rush! Good one Trevor! :-)

Sheldon Taylor
supply chain electronics
Wake Forest, North Carolina
2007