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Old 02-20-2016, 07:54 PM   #1
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Need Help to ID Plumbing Fittings

I have searched and cannot ID these fittings or how they are removed/installed. I need to change by water tank fill bypass valve & it is this type of fitting. (This picture is not of the valve, just easier to photo). 2002 Bounder 34D
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Old 02-20-2016, 08:16 PM   #2
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I think what you are looking at is known as PEX piping. If not, I'll bet a PEX will work as that is what is in my Tiffin Allegro Bus. You can cut the old ones off with a plastic tubing cutter then install either the crimp on version that I think I see in your picture or you can just use the push on version. There is also a cutter for the crimp on version if you must save the pipe. The crimp on version is more permanent, but requires a special crimp tool. I use the push on fittings in my motorhome to repair several problems and have had no problem over several years.

Here is more info:PEX Piping: Everything You Need to Know | The Family Handyman

You can get all the parts at many hardware stores, Lowes, Home Depot, etc.

Happy plumbing.
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Old 02-20-2016, 08:20 PM   #3
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dsintrepid-

Those red parts look like the expander rings used in PEX radiant floor installations. You use a special tool to install them, and in general they must be cut off and- if things are going your way- you can heat the tubing underneath and twist out the (in your case) black fitting.

If things aren't going your way, you have to cut the fitting out of the tubing (that is, not remove the expander rings).

At least, that's what they look like to me.

There are several ways of securing fittings in PEX and similar plastic tubing. The Shark-Bite line is popular.
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Old 02-20-2016, 08:27 PM   #4
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Agree it looks like PEX. Shark bite or their equivalent fittings are tool less, work, and will probably come down to being cheaper than buying a crimper. Local Lowes and Home Depot probably sell the pex by the foot. I'd be inclined to look over what is available and then figure out how to go about it.
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Old 02-21-2016, 06:16 PM   #5
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Thank you all. It does in fact look to be PEX.
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Old 02-21-2016, 06:38 PM   #6
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It is pex. Wirsbo <sp> is the brand name for that one.
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Old 02-22-2016, 08:01 PM   #7
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Quote:
Originally Posted by malexander View Post
It is pex. Wirsbo <sp> is the brand name for that one.
Wirsbo PEX made by Uponor, sometimes using the name TuffPEX.

The fittings in the picture are call ProPEX connections. It uses an expander head to enlarge the PEX and the ring then it slips over the fitting. After 10-15 minutes, you can put full pressure on the fitting.

(For what it's worth, I'm a Uponor Advantage member, installing Radiant Floor Heat. I have those fittings helping to heat my house.)
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Old 02-24-2016, 10:16 AM   #8
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pex you can buy fittings rings crimping tool cutter at home depot for a reasonable price do it yourself. 3/4 or 1/2 inch tubing is there as well it will be white now used to be clear colored blue or red or grey
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