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 Catalina 25 Specific Forum
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newell
Navigator

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USA
113 Posts
Initially Posted - 05/17/2007 :  06:46:54  Show Profile
I apologize if this has been discussed but I can't find any evidence of it. I have recently purchased a C25 after years of sailing a Contessa 26. I note that the ice box drains into the same thru hull as the galley sink and that sink water backs up into the ice box. Has anyone else had to deal with this and if so what is the solution??

newell
Newell
1980 C25 SR/SK
AVALON
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Brooke Willson
Admiral

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USA
983 Posts
Response Posted - 05/17/2007 :  07:14:29  Show Profile
There's supposed to be a backflow valve in the drain line. Yours may be faulty and need replacing. On the other hand, many of us find the uninsulated "ice box" is better used as a storage compartment, the drain hole plugged, and a cooler brought onboard.

Brooke
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Bill Holcomb
Admiral

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USA
769 Posts
Response Posted - 05/17/2007 :  08:09:54  Show Profile
Hi Newell,

One of the big problems with the C25 ice box drain is that if the thru hull valve is open (to allow for draining) and the boat heels over to port 25 degrees or more, water from outside the boat finds it's way into the ice box. To solve this required me to take two steps.

1. Freeze water in 1 gallon plastic containers. That way the "ice" doesn't melt into the ice box. Freeze the water at home in the freezer and take it to the boat.

2, I changed the little check valve to a bronze ball valve (similar to the thru hull valve. I bought the valve at Lowe's or Home Depot.... much less expensive than the boat places.... I keep the ice box valve closed until I actually want to empty any water from the ice box.

Bill Holcomb - C25 Snickerdoodle #4839
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newell
Navigator

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USA
113 Posts
Response Posted - 05/17/2007 :  08:47:27  Show Profile
thanks for the recent advice regarding the ice box drain.....very helpful.

newell
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Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts
Response Posted - 05/17/2007 :  09:16:49  Show Profile
Another vote for converting the "ice box" to dry storage... A disadvantage of the stock configuration is the ice box drain acts as a vent to the sink drain (like the vents in your home plumbing), preventing it from developing a nice syphon action sucking the water out of the sink. That's why my forward sink always drained better than the galley sink. Also, air can be trapped in a high point in the sink drain hose and literally stop the flow until you develop enough pressure to drive the air down through the thru-hull. My plan, never executed, was to remove the icebox drain and cap its entry to the seacock. What I did do was reposition the sink drain hose so it angled steadily downward--no upward loops--that helped. (Now, for any fixture below the waterline like a head, you definitely want a vented loop!)
Edited by - Dave Bristle on 05/17/2007 09:19:45
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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts
Response Posted - 05/17/2007 :  10:36:44  Show Profile
On my boat, the drain at the bottom of ice box is located at the highest corner which resulted in water pooling in the low end.
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Happy D
Admiral

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921 Posts
Response Posted - 05/17/2007 :  14:05:18  Show Profile
You have to tack Don and the water runs out.
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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts
Response Posted - 05/17/2007 :  14:37:11  Show Profile
Yeah, port tack to drain and starboard to fill!
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sweetcraft
Admiral

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USA
816 Posts
Response Posted - 05/18/2007 :  00:49:37  Show Profile
I almost don't want to tell you what I have done but...... I insulated the box and talked about Frank the whole time. Put in a second drain, put both into a plastic box with a float switch and a pump which pumps out through the swing keel cable hose (which the top is above the waterline). It is controled with a WM pump switch with manual, off and auto with a light when the pump is running. Worked great but was it worth it?
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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.