Tygon to compression fitting. Does it exist?

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Tygon to compression fitting. Does it exist?

Postby mike.smith » Fri Jan 31, 2025 8:49 pm

Hi, all,

I received the free updated altitude encoder for the uAvioniz echoUAT. It has a compression type fitting for a 1/4" polyethylene tube, like these:
https://www.kitplanes.com/all-about-avi ... ot-static/

My pitot/static system is all tygon tubing, which is too flexible for these compression fittings. Does anyone know if there is a fitting that accepts the 1/4" polyethylene tubing at one end, and has a barbed fitting for the tygon tubing at the other?

Thanks,
Mike Smith
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Re: Tygon to compression fitting. Does it exist?

Postby Bryan Cotton » Fri Jan 31, 2025 9:59 pm

How about a double barb? A heat gun will make the poly tube compliant enough for a barb fitting I think. Try it on scrap.
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Re: Tygon to compression fitting. Does it exist?

Postby mike.smith » Fri Jan 31, 2025 10:07 pm

Bryan Cotton wrote:How about a double barb? A heat gun will make the poly tube compliant enough for a barb fitting I think. Try it on scrap.


I'll probably have to try that if there isn't another more elegant solution. That polyethylene is pretty tough stuff.
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Re: Tygon to compression fitting. Does it exist?

Postby ampzapper » Fri Jan 31, 2025 10:47 pm

You may be able to make your own fitting by buying 2 adapters, one to female npt and the other to male npt and joining them. You could also incorporate into a tee. I’ve done that for non-plane things with adapters from a home improvement store.
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Re: Tygon to compression fitting. Does it exist?

Postby Area 51% » Sat Feb 01, 2025 8:10 am

Have you tried the inserts that go in the end of the tube to keep it from collapsing?
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Re: Tygon to compression fitting. Does it exist?

Postby Tony4aro » Sat Feb 01, 2025 1:12 pm

officially it doesn't exist, but we use them all the time on model aircraft. just need the proper OD hose to make it work
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Re: Tygon to compression fitting. Does it exist?

Postby mike.smith » Sat Feb 01, 2025 2:33 pm

Tony4aro wrote:officially it doesn't exist, but we use them all the time on model aircraft. just need the proper OD hose to make it work


Not sure what that means. The tygon is totally flexible, and the polyethylene is extremely rigid. Two different materials, so I'm not sure what the OD has to do with that?
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