Plumbing..Hose reduction coupling? Does it exist? - SailNet Community
 
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post #1 of 6 Old 10-12-2013 Thread Starter
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Plumbing..Hose reduction coupling? Does it exist?

Hey everyone,

I'm looking to connect a 2" hose from a galley sink to a 1 1/4" or 1 1/2" seacock.

I've got a galley sink that has a 2" drain. I just removed a 1 1/4" marlon seacock and through-hull for replacement with bronze. This seacock I just removed has a funky hardware-store plastic reduction thing so the 2" hose from the sink can clamp onto it. That plastic thing won't fit the new bronze seacock I'm going to buy.

Is there a solid hose reducing coupling that I can use to clamp a smaller host to the 2" hose? I know I could just move up to a 2" seacock, but I'd kind of like to avoid the cost, and drilling a larger hole in the boat. I could move from the 1 1/4" to 1 1/2", but that does not get me to where the hose fits.

Does this exist for larger hoses? A google search turns up lots of smaller, nothing for 2" to 1 1/4".



Any better suggestions??

Preserved Killick


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Last edited by preservedkillick; 10-12-2013 at 08:18 PM.
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post #2 of 6 Old 10-13-2013
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Re: Plumbing..Hose reduction coupling? Does it exist?

The cheapest and safest fix I found for this was to simply replace the extension under the drain basket assembly on the sink with one of an appropriate size for the seacock. I prefer the adaptor on the end above the waterline :-). The threads there mate up to a reducer before the hose. You can also replace the barbed fitting on the seacock with a male to male threaded fitting with a reducer and then a fitting for the hose, but it's more expensive, awkward and in my case wouldn't fit.

From the bottom of this thing
http://www.plumbersurplus.com/Prod/E...23580/Cat/1141
attach this
http://www.rona.ca/en/abs-adapter-trap-0068147--1

Glued into
http://www.rona.ca/en/abs-reducing-coupling-0068165--1

Last edited by Jgbrown; 10-13-2013 at 10:58 PM.
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post #3 of 6 Old 10-14-2013
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Re: Plumbing..Hose reduction coupling? Does it exist?

Standard size for kitchen sink drains is 1 1/2" and for bath sink drains is 1 1/4". Changing the sink drain would seem to be the easiest place to start.
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post #4 of 6 Old 10-15-2013
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Re: Plumbing..Hose reduction coupling? Does it exist?

I would want to fix it at the sink as well. Otherwise, a clog could occur half way down the line, where you install the coupling. Particularly, since that coupling would take up even more room inside the hose.


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post #5 of 6 Old 10-16-2013
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Re: Plumbing..Hose reduction coupling? Does it exist?

The under sink fitting is the weak point. Insure hose is secure to bulkhead. If it falls over you get a wet bilge.
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post #6 of 6 Old 10-16-2013
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Re: Plumbing..Hose reduction coupling? Does it exist?

I have such a reducer sitting in my barn somewhere that I planned to use and then changed my mind after ordering it. I'll find it and PM you a picture. If you can use it you can have it.

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