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Old 09-23-2022, 03:44 PM   #1
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Water tank to tank connection hose hunt

My new to me 2019 Dutchmen, Voltage 3655 has two water tanks connected underneath by two hoses, one above the other. The tanks have a tapered, smooth fitting coming out of them.
The hoses appear to have been mistreated and one sprung a leak. They are Flexaust PVC IAPMO-T 1 3/8" ID.





I can get no answer from Flexaust website contact forms.
I have been referred by Dutchmen to TIARA 574-266-2136 and was batted around with final person emailed twice in 10 days.
I can see some "filler' hose on Ebay but is it heavy or just the thin, brittle "corrugated" hosing?
Anybody have a source?
Everything in the US is 1 1/4 or 1 1/2" ID.
Thanks.
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Old 09-23-2022, 04:53 PM   #2
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Maybe this is too obvious, but suggest measuring the fitting outside diameter that the hose clamps onto to confirm the correct hose inside diameter (ID). You can purchase Rv Food Safe hose 1.375 inch (1-3/8" ID) made from ethylene copolymer (great flexibility with no kinking). One source is Amazon and there are many suppliers like this one: https://www.amazon.com/Flats-Concess...3D&sr=8-3&th=1
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Old 09-23-2022, 05:29 PM   #3
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Quote:
Originally Posted by Camp CA View Post
Maybe this is too obvious, but suggest measuring the fitting outside diameter that the hose clamps onto to confirm the correct hose inside diameter (ID). You can purchase Rv Food Safe hose 1.375 inch (1-3/8" ID) made from ethylene copolymer (great flexibility with no kinking). One source is Amazon and there are many suppliers like this one: https://www.amazon.com/Flats-Concess...3D&sr=8-3&th=1
That looks like the fresh water fill hose which is very durable. It's what I would use.
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Old 09-24-2022, 12:28 PM   #4
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Thank you both.
I saw that tubing and the pic was so poor I could not make a decision. I guess $23 is cheap to try out now that I think about it.

I set a hose clamp at the tip of the tapered tank nipple. It tapers out larger toward the tank. Not to 1 1/2" though.


I tried 1 1/2" hose and compressed hard with clamp. It was easy to wiggle off.

Here is a pic of the bend required.



Here is where the installer helped the bend by heating the hose.
[IMG]
https://www.irv2.com/forums/attachment.php?attachmentid=377241&stc=1&d=1664040 327[/IMG]

It started as a micro leak that did not leak unless the tank was almost full. I would park and see water and the next day none. It was a mystery to figure out until it got worse and worse and I knew the level of water in the tank and the drip rate.

Also they had some sort of non-hardening "glue" on the hose. Feels like silicone on the fingers but very thick and sticky. It is not like the plumbers putty I have ever seen. It is more translucent. Any ideas? The polyethylene tank nipple and the taper astound me.

Thanks again.
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Old 10-03-2022, 11:58 AM   #5
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Update.
Finally got a response from someone at Flexaust. The same tubing is now called Saniflex -
Plastic helix supported natural PVC tape hose.

And smallest they sell is 50'. Using search I found someone on E-bay that sells it. https://www.ebay.com/itm/222842278439. Labeled as; 1-3/8" Fresh Water Tank Filler Hose RV Camper Boat Concession 1.375 Fill.

Sure looks right.
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Old 10-05-2022, 06:57 PM   #6
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Replacement came.
Had a procedure and cannot do any "work" for nine more days.
Does not look quite as substantial but pretty sure it will do the job as I don't plan on heating any of it.
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Old 10-05-2022, 07:14 PM   #7
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