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 Catalina/Capri 25/250 Sailor's Forums
 General Sailing Forum
 Thru Hull Size (At Sink)		  New Topic  Topic Locked
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Ericson33
Admiral

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USA
892 Posts
Initially Posted - 06/25/2006 :  14:22:40  Show Profile  Visit Ericson33's Homepage
I was up at the boat today and messing around with the gate valve on the thru-hull and noticed that ours was sticking open. The handle is rusted and I want to replace it with a newer Lewmar valve. I am guessing that the size is 3/4" Does anyone know the correct size so I can order one. Ours like I stated is really rusty and I want the replacement before I take the old one off.
C.S. McKillip
Ericson 33
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Leon Sisson
Master Marine Consultant

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USA
1893 Posts
Response Posted - 06/25/2006 :  19:19:06  Show Profile  Visit Leon Sisson's Homepage
I'm pretty sure the stock galley drain plumbing on a C-25 is 3/4". If what you've got is a gate valve on a "to-hull", this would seem to be a good time to replace all that with a real thru-hull and seacock. When I did mine, I increased the plumbing size to 1", used a flush (countersunk) bronze thru-hull, 1" teak backing block, and a bronze seacock with stainless steel ball valve and nylon valve seat. Note that a true seacock has a mounting flange and different threads than an inline ball valve.

The countersink for the thru-hull was very easy to form. I roughed it in with a 4" disk on a right angle grinder held at an angle, and did the last bit of fitting with the largest drum sander which would fit the curvature, in a variable speed drill motor.

I put a 1"x1/2" T-fitting on top of the seacock, and a 1/2" PVC ball valve off that for the icebox drain. (I don't know if your boat was the built in icebox feature in the galley.)

The 1" sink drain seemed a lot less likely to get clogged with food scraps from the galley.

-- Leon Sisson
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existentialsailor
Master Marine Consultant

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USA
1180 Posts
Response Posted - 06/25/2006 :  20:40:16  Show Profile
Chris,

That stock thing on a Capri is a sinking waiting to happen. Follow Leon's advice or do like I did, remove the whole abortion and glass the hole so you have one less obstruction on the hull. Maybe you use your sink a lot, but I don't so having a drain through the hull seems totally unnecessary.
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Ericson33
Admiral

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USA
892 Posts
Response Posted - 06/26/2006 :  15:06:24  Show Profile  Visit Ericson33's Homepage
The sink is used for storage-seems like a handy place to throw stuff into when in a hurry. As for the valve its a POS, But it would be nice to have a place to wash off a plate, so I will add a thru hull. I am guessing that when I do take the gate valve off it will rip the glass loose from the hull, making a nice hole to fix. We will see. Thanks
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existentialsailor
Master Marine Consultant

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USA
1180 Posts
Response Posted - 06/26/2006 :  17:41:36  Show Profile
Chris,
The pipe was threaded into my hull, it didn't let go without one hell of a fight.
Put a jug under the drain held in place with a bungee.
I also removed the gross water tank and water lines. I'm replacing the water tank with a plastimo bladder. I'm installing it so it is removable for the winter.
Easier to winterize that way.
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Ericson33
Admiral

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USA
892 Posts
Response Posted - 06/26/2006 :  18:29:18  Show Profile  Visit Ericson33's Homepage
Thanks Rick, The tank in ours is a nice hairy green color. The lines are all black with mould. Everything will be replaced at some time.
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.