Hose to barb connection - SailNet Community
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post #1 of 12 Old 03-07-2009 Thread Starter
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Hose to barb connection

I am replacing thru-hull tailpipes (brass with bronze). The hose that leads to thruhull is 1 5/8" (because of a permanent fitting on the other end). There are no bronze tailpipes specifically for that size (or at least I can't find any), so I am using 1 1/2". I can, of course, just tighten the heck out of clamps and leave it that way - but these are cockpit drains, permanently open, and this solution does not make me feel all warm and fuzzy.

Can I use something like duck tape to build up thickness of the tailpipe? Or what would be a good material?
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post #2 of 12 Old 03-07-2009
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I'd change the other end somehow, that end is well above water and won't pose near the liability that a poorly rigged thru hull might
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post #3 of 12 Old 03-07-2009 Thread Starter
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the other end cannot be changed (without lots of complicated fiberglass work), so while I'd like that in theory - it won't happen. I need solutions that would work and won't cost thousands
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post #4 of 12 Old 03-07-2009
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As high up as you can go; put in a hose to hose adapter and make the size adjustment there.

So you'd have 1.5" hose on the thru-hull and that would go higher than the heeled water line. Somewhere above that you make some sort of barb to barb adaption
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post #5 of 12 Old 03-07-2009 Thread Starter
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Yep, that was one thing I considered, the only problem is - I can't find barb-to-barb adapters from 1 1/2 to 1 5/8 in any decent material (and a few I found are garden hose plastic variety - which sounds like even more trouble).
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post #6 of 12 Old 03-07-2009
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Up above the heeled water line it won't be nearly so bad to have something rigged. If you can find a garden hose plastic, you could use that and perhaps wrap it with amagmated tape for a little extra protection.

Better than any sort of cobbled rig at the seacock

One other thing to try...I just found I needed a 2" to 1.5" elbow. Midland metal said they don't have it so I thought I was stuck. Called Hamilton Marine Supply in Maine. He found me one. Call Hamilton 800-639 2715
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post #7 of 12 Old 03-08-2009 Thread Starter
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their catalog doesn't have it but I'll try calling.

amazingly, they sell cockpit drain fittings that are 1 5/8" thick - (just like mine except mine are permanently glassed in). I wonder who can use those if no other fitting is of the same size.

Conbraco catalog doesn't show any fittings in 1 5/8" either.
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post #8 of 12 Old 03-08-2009
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You should also look at McMaster-Carr, as they might have something that will work.

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Quote:
Originally Posted by brak View Post
their catalog doesn't have it but I'll try calling.

amazingly, they sell cockpit drain fittings that are 1 5/8" thick - (just like mine except mine are permanently glassed in). I wonder who can use those if no other fitting is of the same size.

Conbraco catalog doesn't show any fittings in 1 5/8" either.
If they have 1 5/8 fittings, they should have other stuff that works with it.

The reducing elbow I bought from them definately was not in their catalog. The guy took my name and number and called me back in a half hour with the solution
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post #10 of 12 Old 03-08-2009
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Lightbulb

If you still draw a blank on the fittings, you may well be able to use 1-1/2 hose, the "solid-vinyl-with-plastic-wire-in-it" kind used for some head discharge lines, and warm the end to make it flexible enough to fit the 1-5/8 fitting. I know Shields makes this kind of hose, and it gets amazingly supple when it's heated.

Paul Van Voorhees
Certified Tohatsu TLDI Technician
Mgr, Obersheimer Sails
Buffalo, NY USA
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