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is it even possible to avoid nickel in a loop? because fittings

post #1 of 7
Thread Starter 
I'm still not sure it's necessary to avoid nickel when using silver (mine happen to be Monsoon compression fittings with silver plated barbs). But I'm not sure how I could even avoid nickel. You can get all copper blocks and copper rads, but every fitting I know of has nickel plating. They have paint or chrome finishes on them, but they all seem to be brass with nickel plating and then a finish on top. And often the finish isn't complete inside the fittings, only on the outside. And paint and other finishes flake and you get exposed nickel plating.

So I'm not sure what guys like Unicr0nhunter and Martinm mean when they say if using silver in your loop, avoid nickel. What line of fittings are out there that don't have nickel plating?
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post #2 of 7
I don't see the difference, copper will also suffer from galvanic corrosion in a loop with silver, although it will be fairly subtle.

I'm considering building some sort of UV anti microbial system ffo my new build rather than using silver, as I have got some corrosion on my block and barbs.
Anybody tried this before, like the sort of thing some ponds have.
post #3 of 7
post #4 of 7
Quote:
Originally Posted by Duality92 View Post

Alphacool has pure cooper fittings that could do the job. I don't know about their price though.

http://www.aquatuning.us/water-cooling/fittings/compression-fittings/1610mm/11727/alphacool-hf-16/10-anschraubtuelle-900-drehbar-g1/4-shiny-copper

Quote:
Technical specifications:
Material: Brass, chromatized
Colour: Shiny Copper


Pure copper is too soft for fittings i guess.
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post #5 of 7
Thread Starter 
Quote:
Originally Posted by Duality92 View Post

Alphacool has pure cooper fittings that could do the job. I don't know about their price though.

http://www.aquatuning.us/water-cooling/fittings/compression-fittings/1610mm/11727/alphacool-hf-16/10-anschraubtuelle-900-drehbar-g1/4-shiny-copper


It's copper plated brass, I wonder if it's straight copper plating onto brass, or there is a layer of electroless nickel in between like you get in fittings that say "chrome".

Prices seem fine, that part you listed shows up for me as $8, which is darn cheap for a rotary elbow compression.
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post #6 of 7
Quote:
Originally Posted by BURGER4life View Post


Pure copper is too soft for fittings i guess.

But there's no nickel as OP said most barbs have. I know also my high flow barbs are only painted copper...
Quote:
Originally Posted by taem View Post

It's copper plated brass, I wonder if it's straight copper plating onto brass, or there is a layer of electroless nickel in between like you get in fittings that say "chrome".

Prices seem fine, that part you listed shows up for me as $8, which is darn cheap for a rotary elbow compression.

the nickel plating is just for corrosion since chrome does not protect much against corrosion. They probably put a coat of nickel to prevent the the corrosion to come through the chrome. I think it would not matter for these since they're copper outside.

PS, I think you're the first I see on these forums who knows something about plating. Where'd you learn it? I deal with plating everyday! tongue.gif
post #7 of 7
The issue with corrosion is not so much between silver and nickel, The real issue is between silver and tin-lead solder. Most of the RADs are soldered with tin-lead solder. The corrosion potential is .45 with the solder to silver. The potential is only .25 between silver and brass. The potential is .35 between the solder and brass. There will always be a potential for corrosion. Do regular coolant changes and sleep good at night.
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