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Old 08-03-2020, 06:49 AM   #1
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White "rubber" water hose Pex fittings

The white "rubber" hoses that Tiffen uses in the water bay are connected with a Pex crimp fitting. These fittings are 18.5 mm and are not easy to find in the big box stores. Commonly found 1/2 inch fittings are too small and a 3/4 is too large. The fitting size is usually stamped on the fitting.
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Old 08-03-2020, 06:59 AM   #2
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"Shark-bite" fitting??????
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Old 08-03-2020, 07:04 AM   #3
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You can order them at the Tiffin store.
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Old 08-03-2020, 08:26 AM   #4
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White "rubber" water hose Pex fittings

Those PEX fittings are used on PEX hose. Home Depot or Lowe’s will have everything that you need.
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Old 08-03-2020, 08:29 AM   #5
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Quote:
Originally Posted by jzeurcher View Post
Those PEX fittings are used on PEX hose. Home Depot or Lowe’s will have everything that you need.
I checked at both Lowes and Home Depot. They did not carry the 18.5mm fittings. I had to order them from Amazon.
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Old 08-03-2020, 08:36 AM   #6
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"Shark-bite" fitting??????
Not sure if the SharkBite fittings would work on the soft hose. I have not found any metric Sharkbite either.
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Old 08-03-2020, 10:05 AM   #7
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...not sure shark bite is that particular about the exact size?????? Curious--would a uniquely sized ban require a uniquely sized crimping tool??????
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Old 08-03-2020, 11:39 AM   #8
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...not sure shark bite is that particular about the exact size?????? Curious--would a uniquely sized ban require a uniquely sized crimping tool??????
Crimp tool for the 18.5mm is the same for 1/2 and 3/4 inch. The issue I see with the shark bite is that they are made for Pex which is more rigid that the hose.
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Old 08-03-2020, 12:59 PM   #9
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Agree--you might find a brass bushing to fit the ID of the rubber hose but an 18.5 mm crimp bad might be the best solution...
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Old 08-03-2020, 02:08 PM   #10
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Most of the plumbing in my coach is the referenced "white" hose. I have installed numerous shut off valves with regular pex fittings and cinch clamps from Lowes/HD/Menards. The only issue has been that some of the cinch clamps are hard to slip over the flex hose.
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Old 08-03-2020, 02:53 PM   #11
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Most of the plumbing in my coach is the referenced "white" hose. I have installed numerous shut off valves with regular pex fittings and cinch clamps from Lowes/HD/Menards. The only issue has been that some of the cinch clamps are hard to slip over the flex hose.
The clamps used by Tiffen are 18.5 mm. I tried the 1/2 inch and as you say they are very hard to get over the hose and very hard to crimp. That is why I went to the 18.5 mm fitting.
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Old 08-05-2020, 08:19 PM   #12
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They always seem to leak if you mess with them. Odd size and brittle fittings (china I suspect) so I just keep a supply of regular ss hose clamps handy.
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