seacocks (again)

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VADROUILLE

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Just to put my mind at rest, can someone tell me if my seacocks should be going a blue/green color on the inside? (i.e the bit you can see from the inside of the boat, the outside of the seacock but inside the boat)

Like a fool i have ditiched the seacock series from ym and i cant remember what the green/blue color ment?

They should be good, i replaced two of them last year with dzr from asap, cost a small fortune!

thanks in advance
 
Just the natural patina. Of basic copper carbonate ( verdigris) away from the sea but basic copper chloride near the sea.
 
This is at the root of the problem. All brasses, including DZR, and most bronzes suffer surface corrosion to a blue-green colour, making it virtually impossible to tell them apart. In most cases this is a patina, skin deep and not harmful.
 
vyv_cox said:
This is at the root of the problem. All brasses, including DZR, and most bronzes suffer surface corrosion to a blue-green colour, making it virtually impossible to tell them apart. In most cases this is a patina, skin deep and not harmful.
Click to expand...

You could take a scraper to the fittings, especially from the outside, and check that there is no pink colour to the metal under the green.
 
The patina will easily come off with a wire brush. Used to do this and then slap some lanoline over it to stop it recurring. Very effective, but not popular with ladies when they had to degrease their hands after a call of nature! We substituted an occasional spray with WD40 to slow it down, but not as effective.

Rob.
 
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