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Old 11-22-2015, 01:21 PM   #1
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identify seacock?

Can anyone identify the brand of seacock on 1986 Krogen?
Thanks
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Old 11-22-2015, 02:11 PM   #2
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Maybe some Chinese mystery brand. Whatever it is, it looks like it's time to replace it.
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Old 11-22-2015, 02:34 PM   #3
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That's a big hole to have underwater in your hull with nothing on it........I would replace that with something contemporary and, of course, a nice big backing plate.
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Old 11-22-2015, 02:40 PM   #4
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I agree, I had a similar mystery valve on our hot water heater discharge. Asians are great at copying things, we have a lot of stainless steel elbows on plumbing hoses that look kind of marginal until you figure our boat is 28 years old. But I agree it needs to go, big difference between sea cocks and a shower drain elbow.
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Old 11-22-2015, 04:03 PM   #5
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Read this Replacing Thru-Hulls and Seacocks Photo Gallery by Compass Marine How To at pbase.com

Then replace that.

Note that Groco took Maine Sails idea for a backing block, improved on it and now sells them ready made.
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Old 11-22-2015, 08:42 PM   #6
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That is NOT a seacock, rather simply a through hull with a ball valve screwed onto it. They did at least, it appears, shorten the through hull to reduce leverage. It appears also that they added frp to the area around the through hull to thicken and strengthen the hull skin.

Still not a seacock. Replace it after reading the Compass Marine article as shown above.
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Old 11-24-2015, 02:17 AM   #7
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If that is indeed just a ball valve on a through hole it's a wonder it doesn't leak. most through holes are straight thread where your standard big box store ball valve is a tapered thread.
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