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Old 25-12-2017, 05:19   #1
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Corroded valve and tap

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Old 25-12-2017, 08:26   #2
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Re: Corroded valve and tap

Yep, that’s a crap non marine valve favored by the European builders. Luckily it wasn’t below the waterline.
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Old 25-12-2017, 08:37   #3
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Re: Corroded valve and tap

It was below the waterline. There are at least 6 or 8 valves that I will have to change. 3 on each head and I think 1 on each engine.
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Old 25-12-2017, 08:59   #4
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Re: Corroded valve and tap

That is another example of mismatched threads-trying to screw a straight threaded thru hull into a taper threaded valve

Seacock & Thru-Hull Primer/Pre Information Photo Gallery by Compass Marine How To at pbase.com

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Old 25-12-2017, 09:16   #5
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Re: Corroded valve and tap

A marine valve is straight on the one side and tapered on the other. Learnt this today.
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Old 26-12-2017, 11:24   #6
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Re: Corroded valve and tap

Quote:
Originally Posted by wineswine View Post
A marine valve is straight on the one side and tapered on the other. Learnt this today.
A seacock is straight on one side and tapered on the other, and it has a flange that is attached to the hull. A marine grade ball valve is tapered. Groco makes an adapter that corrects this problem.
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Old 26-12-2017, 12:12   #7
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Re: Corroded valve and tap

Good news is it looks like you can save the thru hulls if they’re reasonable quality. Cut them down a bit, get adapters, valves and barbed fittings. Still not cheap and will be a couple grand.
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