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Old 10-10-2010, 18:18   #1
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Matching Different Size Hoses Up (Nicro Vent to Vent Hose)

I have a Nicro vent (3 3/4" OD) sticking about an inch under the cabin overhead. So it's a 3 3/4" OD pipe, of sorts.

I have about a 3 1/2" OD flat flange that I need to fit against that 3 3/4" OD pipe.

What I'm trying to figure out is if there's a flexible arrangement for matching these up. Like a hose clamp on each end and some kind of airtight material in between, like a waterproof canvas of some type. I guess if I had a 3 3/4" in diameter and maybe a couple of inches long I could just hose clamp the two together.

Kind of random, I know.
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Old 10-10-2010, 18:27   #2
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Plumbing shops have these in black neoprene. Looks like a PSS bellows without the accordian part.
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Old 10-10-2010, 18:42   #3
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Quote:
Originally Posted by Blue Stocking View Post
Plumbing shops have these in black neoprene. Looks like a PSS bellows without the accordian part.
Thanks for the info on that. I did some googling around based on "neoprene bellows" and there are even these guys who will fab one for whatever size you need:

Custom Bellows Worksheet
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Old 11-10-2010, 05:53   #4
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"Fernco" flexible couplings
Flexible Pipe Connectors plumbing world has the largest selection
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Old 11-10-2010, 10:26   #5
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My wife might just go ahead and make an adapter out of canvas. Should be sufficiently "airtight" to make sure there's still enough vacuum through the line. And it will match!
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Old 11-10-2010, 11:18   #6
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fernco fittings will do another real good spare parts thing is Self bonding roofers flashing. Excellent for mast boots but could be used for this. If you see a guy from a roofing company digging around in his van ask him for some. Haven't bought any in years so I don't know what it is called. Its like this "I have a leak on boat and used this real thick stickey rubber stuff that was tough as nails and never leaks.do you know what I mean. Usually its how much do you need? maybe 4' would do it.Then I forget to ask what its called.
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