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Old 07-03-2020, 07:27 PM   #1
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installing new faucets designed for house, need help with connecting to grey poly

I have installed standard household faucets and have standard female 3/8 braided lines but grey polybutylene pipe, been to several big box home stores and getting no help, I wonder if someone here would know what I can use to connect the two, I have. very limited knowledge on plumbing, and any help would be appreciated, I like pictures too lol. thank you in advance.
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Old 07-03-2020, 07:37 PM   #2
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Full disclosure: I'm not a plumber. (My father is, but apparently it's not genetic!)

In the past, I think I've used a SharkBite fitting to go from polybutylene to NPT. Does that not work for you?

I find the guys who work at my local hardware store to be quite a bit more knowledgeable than the "big box" boys. Take what you have to your neighborhood hardware store and let them give you a solution. This works for me when I hit the end of my plumbing knowledge.
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Old 07-03-2020, 11:56 PM   #3
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Suggest you use a standard shut off valve and then adapt to your lines. I have expansion ring pex so I just ordered drop ear elbows to secure to the cabinet and adapt to size of my lines.

Click image for larger version

Name:	hot water bypass line.jpg
Views:	11
Size:	270.8 KB
ID:	371911

Disregard the circled fitting that was about a different topic.
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Old 07-20-2020, 09:16 PM   #4
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Suggest you use a standard shut off valve and then adapt to your lines. I have expansion ring pex so I just ordered drop ear elbows to secure to the cabinet and adapt to size of my lines.

Attachment 371911

Disregard the circled fitting that was about a different topic.
Interested to know where you ordered these elbows,,, are they a standered that matches up with the existing faucet supply fittings at the sinks?
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Old 07-20-2020, 09:56 PM   #5
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I ordered mine through Supply House. They refer to the expansion ring fittings as ProPEX and are made by Uponor (Wirsbo). They seem to have the largest selection of fittings for ProPEX. They also carry crimp, Shark Bite, Blue Fin and others.

https://www.supplyhouse.com/sh/contr...+elbows+propex

I used the fitting with 1/2" propex and 1/2" female NPT (FIP) to match up to the shutoff valve.

https://www.supplyhouse.com/Wirsbo-U...-PEX-x-1-2-FIP

Just a reminder to order lead free fittings for use on fresh water lines.
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Old 07-21-2020, 06:33 AM   #6
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Originally Posted by 57Vintage View Post
I ordered mine through Supply House. They refer to the expansion ring fittings as ProPEX and are made by Uponor (Wirsbo). They seem to have the largest selection of fittings for ProPEX. They also carry crimp, Shark Bite, Blue Fin and others.

https://www.supplyhouse.com/sh/contr...+elbows+propex

I used the fitting with 1/2" propex and 1/2" female NPT (FIP) to match up to the shutoff valve.

https://www.supplyhouse.com/Wirsbo-U...-PEX-x-1-2-FIP

Just a reminder to order lead free fittings for use on fresh water lines.

Thanks Harold,,,

Looks to me like you did things the easy way,,,,, replaced everything,,,,
Smart way too I might add..

Because ours is so new, 89, we’ve not had to venture in to the grey pex world of fixes before,,,,

Main problem, I’m a carpenter at heart, but, I can sweat copper and glue pvc, but have never ventured into the world of crimping tools,,,, where do you even start buying the tools for late eighties grey plastic,,, are those type fittings the same as those used today’s?

I may just have to leave the old sinks in,,, I think I can patch the holes I the new counters and they will look fine... I’m a pretty good carpenter,,,,
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Old 07-21-2020, 09:41 AM   #7
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Sorry, can't help you on the gray plastic, never used it.

I know a lot use Shark Bite and are very happy with it. One of the reasons I went with expansion ring is my current house is the same and that helped justify the expense of the tool needed. We have 2 room remodels planned and both involve changes to water lines.
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