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Old 28-10-2012, 12:22   #31
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Re: Finally got the specifications of sea cocks from Beneteau. Unbeliveble

Quote:
Originally Posted by Cheechako View Post
Yeah, I just dont get why they cant make that part more robust.... even on the Marelon ones...
The nylon in the marelon valves tends to swell just a little over time which puts more stress on the stem as the ball get a little larger. Its the only real issue that the marelon valves have.

Best thing to do is operate the lever for full range at least once a month.
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Old 28-10-2012, 13:40   #32
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Re: Finally got the specifications of sea cocks from Beneteau. Unbeliveble

Where we are (the EU) the only available replacement was brass. The only way to buy bronze was to order online and then we would not be able to tell if the valves' threads and diameters fit with our thruhulls.

So here we are with brand new, but possibly worse than the the old ones..., fittings!

I just hope that:
- our brass cr..() will give some sign of deterioration before it fails in a dramatic way (???),
- we will be in the West Indies soon enough to buy proper bronze stuff from a US based chandlery.

Meanwhile, we are living in th brass age ...

Cheers,
b.
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Old 28-10-2012, 13:53   #33
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Re: Finally got the specifications of sea cocks from Beneteau. Unbeliveble

Here is a colour chart showing different metals. Lightly sand and match the colours to get an idea of composition.
You could calculate s.g. but that's tedious.

Copper Alloy Forms

Cheers Frank
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