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Old 07-02-2013, 10:41 PM   #16
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Running PEX in mobile home


Your heater should have come with 2 stainless steel dialectic nipples. The usually are already mounted in the hot and cold inlets. Since your tank is electric you can run pex all the way to the nipples. Use a FIP adaptor with pipe dope and tape.
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Old 07-02-2013, 11:03 PM   #17
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Running PEX in mobile home


I haven't actually bought the heater yet.

When I do I may come back.
Thanks
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Old 07-06-2013, 09:54 PM   #18
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Running PEX in mobile home


I am all set I think. I do have one more question. The line from the well comes out of the ground as 3/4" PVC sched. 40. How do I transition from PVC to the PEX line?
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Old 07-07-2013, 06:55 AM   #19
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Running PEX in mobile home


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Originally Posted by Kyle_in_rure View Post
Let me preface this by saying that I have little experience with plumbing.I am in the process of installing a new water heater in a mobile home. (the old one rusted out). All of the plumbing is polybutilene (gray hoses of death). We are on a well so I feel that PEX may be the best choice. I know they make sharkbite connectors that will go from PEX to poly (I am not prepared to replumb the entire trailer right now). Here is what I want to do:
-Install a shutoff where the polybutilene comes out of the ground. (The one at the well won't shut completely off)
-Run PEX from there into the trailer and into the water heater (can you connect PEX directly to the heater? There is some sort of flexible copper fitting there now)
-Run PEX from the water heater to a point where I can transition back to the polybutilene.

Does this make sense/sound reasonable?
Why transition back to PB? Do they make a PB now that is superior in quality to the old Class Action PB?
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Old 07-07-2013, 07:49 AM   #20
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Running PEX in mobile home


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Originally Posted by Kyle_in_rure
I am all set I think. I do have one more question. The line from the well comes out of the ground as 3/4" PVC sched. 40. How do I transition from PVC to the PEX line?
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Nope. Can't afford to do it all right now. This is my question currently. ^^^
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Old 07-07-2013, 09:32 AM   #21
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Running PEX in mobile home


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Nope. Can't afford to do it all right now. This is my question currently. ^^^
Oh ok, sorry - I misunderstood. You meant transition back to the existing PB. I jumped to a conclusion there. I thought you meant transition back and continue on with new PB. My bad.

Last edited by justplumducky; 07-07-2013 at 09:37 AM.
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Old 07-07-2013, 09:49 AM   #22
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Running PEX in mobile home


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Originally Posted by Kyle_in_rure View Post
I am all set I think. I do have one more question. The line from the well comes out of the ground as 3/4" PVC sched. 40. How do I transition from PVC to the PEX line?
Thanks
glue PVC male adapter on the pipe, then screw a PEX female onto it.
DON'T use pvc female adaapters
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Old 07-07-2013, 01:07 PM   #23
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Running PEX in mobile home


Yeah haha. No way I would try to run "new" polybutylene...... Do they even make it anymore?

Just out of curiosity, Is there a reason you can't use a female PVC fitting?
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Old 07-07-2013, 01:15 PM   #24
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Yeah haha. No way I would try to run "new" polybutylene...... Do they even make it anymore?

Just out of curiosity, Is there a reason you can't use a female PVC fitting?
PVC female adpt. are known to crack. The male fitting can act as a wedge and put stress on the female fitting.
Pipe settlement, lateral movement, expansion/contraction, water hammer effects, etc. all add stress to fittings too.

You can use a pvc female- but I advise against it
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Old 07-07-2013, 01:16 PM   #25
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Running PEX in mobile home


Quote:
Originally Posted by TheEplumber

PVC female adpt. are known to crack. The male fitting can act as a wedge and put stress on the female fitting.
Pipe settlement, lateral movement, expansion/contraction, water hammer effects, etc. all add stress to fittings too.

You can use a pvc female- but I advise against it
I wasn't planning on it, just curious as to the reason.

Thanks!
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Old 07-07-2013, 09:38 PM   #26
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Running PEX in mobile home


Ok, pardon my ignorance.....if I use this to connect to the PEX: (<http://www.pexsupply.com/Wirsbo-Uponor-LF4577575-ProPEX-LF-Brass-Female-Threaded-Adapter-3-4-PEX-x-3-4-NPT>), do I need any sort of crimp ring or clamp?
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Old 07-07-2013, 10:15 PM   #27
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Running PEX in mobile home


Yes, you will need to use one of the crimping systems.
I think some of the retail outlets rent the tools
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Old 07-07-2013, 10:16 PM   #28
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Running PEX in mobile home


And that's the only option I assume?


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Old 07-07-2013, 10:42 PM   #29
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And that's the only option I assume?


Thanks
You might check the shark bite line- I assume they would make a threaded adapter. The push fit end works on pex
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Old 07-07-2013, 10:49 PM   #30
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Running PEX in mobile home


I vary rarely use sharkbite products- they may fit right on pvc without the glued adapters. I know they fit different kinds of pipe- I'm just not sure which ones
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