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Old 01-30-2016, 12:07 AM   #1
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Plumbing problem please help!!

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The city water/fresh water diverter valve on my 1979 Dodge Fleetwood Tioga just started leaking in the last 24 hours. (The valve you use to fill the fresh water tank while your RV is hooked to city water) I only noticed it to day when I walked outside the RV and found a small puddle on the ground near the rear driver side. I further investigated to find the basement area under my gas range and kitchenette soaking wet. It was leaking about a drop of water per second. I have managed to stop the leaking for now. I still have running usable city water. I put a small fan in the basement to dry things out. I looked all over the internet to find a replacement valve or instructions on how to repair/replace this one to no avail. This RV uses pretty standard parts so I was amazed I couldn't find anything. I am pretty sure the gasket inside is worn because I took the knob off, and it was leaking out of where the knob goes on. With these crimped ends how would I even replace it and is this a standard plumbing piece that is easily obtainable??? It looks like plumbing that would be used in a house. I would like to completely remove the plumbing for the diverter to prevent further issues but I imagine it would be a lot of work. Anycase, feedback here would be most appreciated.
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Old 01-30-2016, 12:49 AM   #2
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I can't tell from the picture if the valve reduces or not. A very common RV pluming arrangement is Sharkbite. At least you could rebuild the parts you need with them.
Valves - Tub and Shower Parts & Repair - Plumbing Parts & Repair - *The Home Depot


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Old 01-30-2016, 12:58 AM   #3
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You have polybutylene piping........grey pipe with crimped bands

You can change out that valve (and the 'T' below it) by using a conversion fitting.
Grey pipe diameter is different than newer piping/fittings being used.

I would cut out the 'T' and shutoff valve and then replace using conversion fittings and sharkbite fittings (Home Depot) or Gatorbites (Lowes) or even FlairIt (ACE)

Here is some info about poly and conversion
Polybutylene Pipe Fittings & Conversion Couplings
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Old 01-30-2016, 01:58 AM   #4
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X2 on Lowes, Home Depot....cut out what you want to replace and take that to the store with you. The inhouse plumber will set you up. They will also have a pex line crimper. Your lines look like Pex to me. Get some extra crimping bands and line for future use.
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Old 01-30-2016, 08:50 AM   #5
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That is polybutyl, not Pex. You can use compression fitting from Flair or Qest pr Watts, or Sharkbite-style push to fit with a polybutyl adapter. Lowes and Depot have their house brand fittings that work with polybutyl as well.

That looks like a standard inline shutoff valve, so should be no problem getting a repalcement and any hardware or plumbing supply.
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Old 01-30-2016, 09:08 AM   #6
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Getting this type of crimp band can be difficult. You could try a small dremel tool with a cut off blade or abrasive blade, will have to made sure you don't damage the outside of the pipe if you want to use the slip on type fittings as they seal around the outside of the pipe.
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Old 01-30-2016, 10:49 AM   #7
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I just added a 'cutoff' behind my toilet the other day- same piping as yours - and had to purchase a special 'band crimp' tool and 'bands' that fit the pipe(3/8" I believe) - now works and no leak. I bought from a farm supply store, but prob the big boxes have them too, tho the tool was NOT cheap - but cheaper than a plumber!
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Old 01-30-2016, 04:23 PM   #8
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You don't need to use crimp fittings any more - the compression and push-to-fit stuff is very reliable. For polybutyl, Flair-It and Qest fittings are excellent and require no tools. You can get a crimp tool for about $30 at Lowes or Depot, but why bother. The compression or push fittings are pricey, but very easy to use, so well worth it for amateur plumbers.

My 1979 vintage house was built with all polybutyl plumbing, so I have a lot of experience with it. Much of it from breaks as the stuff ages and gets brittle. I've been converter each section to Pex as the problems arise.

A Dremel or similar rotary tool is good for cutting off old crimp fittings, but a hacksaw blade in a handle will do the trick with some care.
http://www.amazon.com/Sainty-Interna...KPC/ref=sr_1_2
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Old 01-31-2016, 06:00 PM   #9
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I have managed to fix the leak for not. I took the end cap off of the valve, took out the valve stem and replaced the O-ring and such. The valve is not usable right now, but as long as it is not tampered with it will not leak. I have a running water again. The toilet and such works now. The basement level is completely dried out now after having a small fan down there for several hours. I learned from the local RV dealership this plumbing is quest tubing. I do not have $100.00 crimping tool to replace it, so this might call for bringing a professional in. Since quest tubing is not very user serviceable, and I do not want a leak like this again. I tried looking online but the crimper is expensive no matter where I look.
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Old 02-01-2016, 04:39 AM   #10
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Quote:
Originally Posted by MisterT View Post
I just added a 'cutoff' behind my toilet the other day- same piping as yours - and had to purchase a special 'band crimp' tool and 'bands' that fit the pipe(3/8" I believe) - now works and no leak. I bought from a farm supply store, but prob the big boxes have them too, tho the tool was NOT cheap - but cheaper than a plumber!

BUT, now you have the tool for any future repairs.
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Old 02-01-2016, 04:41 AM   #11
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Originally Posted by jacwjames View Post
Getting this type of crimp band can be difficult. You could try a small dremel tool with a cut off blade or abrasive blade, will have to made sure you don't damage the outside of the pipe if you want to use the slip on type fittings as they seal around the outside of the pipe.

Those look like aluminum rings. They'll cut pretty easy with a pair of side cutters.
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Old 02-01-2016, 09:42 AM   #12
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Exclamation

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BUT, now you have the tool for any future repairs.
yes, and thats how I helped justify the 'investment' of such a costly small, but important tool. while I don't like these type of water line connections, it seems like most manufacturers are using it. it's good to have this tool the next time a connection or repair needs to be made - it IS quick, it IS easy, and it DOES create a non-leak connection.
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Old 02-01-2016, 09:48 PM   #13
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Quote:
Originally Posted by cimplexsound View Post
I have managed to fix the leak for not. I took the end cap off of the valve, took out the valve stem and replaced the O-ring and such. The valve is not usable right now, but as long as it is not tampered with it will not leak. I have a running water again. The toilet and such works now. The basement level is completely dried out now after having a small fan down there for several hours. I learned from the local RV dealership this plumbing is quest tubing. I do not have $100.00 crimping tool to replace it, so this might call for bringing a professional in. Since quest tubing is not very user serviceable, and I do not want a leak like this again. I tried looking online but the crimper is expensive no matter where I look.
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Old 02-02-2016, 08:31 PM   #14
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Thank you guys. Your feedback is informative and very helpful.
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