Cockpit drain thru-hull sizes

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4 years 8 months ago #2141 by Matt Davis
Cockpit drain thru-hull sizes was created by Matt Davis
Both of my cockpit thru hulls are getting really difficult to turn. Anyone happen to know the dimension/size for replacement? I'm currently away from boat, but recall they are pretty large.

Thanks,

Matt

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4 years 8 months ago #2142 by David Irwin
Replied by David Irwin on topic Cockpit drain thru-hull sizes
Both cockpit drains end with 2" thru hull fittings.
I will be replacing the starboard side deck thru hull on next haul out, going to a 1 1/2 from the original 1 1/4. It clogs with mussels to easy and backs up the drain in a downpour.
Be prepared for a shock if you replace the 2" though. The 1 1/2" from Spartan in Maine was $500 with the 90 degrees barb fitting on top, beautiful piece of bronze hardware.

Good luck
Dave Irwin
S/V Comfort
Boston
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4 years 8 months ago #2143 by Debi Shaimas
Replied by Debi Shaimas on topic Cockpit drain thru-hull sizes
On Serenity (hull number 110, Whitby42) the port side is 2" and the starboard side is only 1". The 1" is definitely too small.

Debi
Serenity
Bahia de Caraquez, Ecuador

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4 years 8 months ago - 4 years 8 months ago #2144 by Gerry O'Donoghue
Replied by Gerry O'Donoghue on topic Cockpit drain thru-hull sizes
See this post (second post down);

theincrediblehull.blogspot.com/search/label/Thru%20Hulls

Groco replaced it with no issue. I really like this system.

If you haven't already seen it everyone should look at the Maine Sail video on sea-cocks.





www.groco.net/00-scks-valves/ibvf-series.htm
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4 years 8 months ago #2147 by Matt Davis
Replied by Matt Davis on topic Cockpit drain thru-hull sizes
Hi Dave,

Thanks for much for the reply. I had no idea they were that expensive! Break Out Another ....

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4 years 8 months ago #2148 by Matt Davis
Replied by Matt Davis on topic Cockpit drain thru-hull sizes
Thanks for reply Gtod. So if I understand this correctly, I can leave the current thru hull fitting in place and just replace valve and add adaptor?

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4 years 8 months ago #2149 by Gerry O'Donoghue
Replied by Gerry O'Donoghue on topic Cockpit drain thru-hull sizes
Hi Matt

Unfortunately no. The modular type fitting is a relatively recent invention. You probably have some of the older Wilcox Crittenden seacocks. They may look like this beast.



If that is the case you can overhaul it. Once again RC Collins is the man to follow; www.pbase.com/mainecruising/tapered_cone_seacocks
These seacocks need to be serviced on an annual basis and cycled every few months, however most look like the ones on my boat when it was first purchased. There is a name for a seacock that does not turn, its called a HOLE.

If you decide to change them out then the Groco two part system is the way to go.

Gerry
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