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water leaks at plastic tubing connections- Northstar Laredo


9 replies to this topic

#1 OFFLINE   amcclaran

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Posted 26 September 2018 - 06:38 AM

If this has ever been addressed in this forum I am unable to find it, so am making it a New Topic:

This has been an issue since we got the TC (2005 NorthStar Laredo). the shower line connections under the dinette seat tend to unscrew themselves over time and actually totally separate. We have had the camper flood because of this on more than one occasion. We now know never to leave the pump in the ON position cause pumping the entire contents of the cold water tank out into the camper is a lot worse than just emptying the lines. Anyway, I have tried tightening the connections but they still work themselves loose. I have taped around everything to try to hold them in place, and this sort-of works, but i still get drips and have to have something under those connections to catch the drips. I don't know if I have tried teflon tape yet but that is the only other thing I can think of.

Has anyone had this problem with these types of water line connections?? Any known fixes? any suggestions??

thanks

 

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#2 OFFLINE   TDWebster

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Posted 26 September 2018 - 03:22 PM

Yup, take the plastic adapter connection off and change it to a sharkbite connector. They can be purchased at menards. You would be advised to take a line piece in from both sizes to ensure the correct fittings. There are others also that work on a compression arrange similar to what you have now. The clear tubing is essentially pex.

 

look here also  https://tweetys.com/...g-fittings.aspx

 

here also  https://pantherrvpro...ing-components/



#3 OFFLINE   amcclaran

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Posted 27 September 2018 - 05:07 AM

Thanks TD. We don't have Menards but did go to our local hardware store and asked about the PEX couplings. They didn't have the smaller size. The web links you gave have couplings that look just like what I am taking off? None mention 'compression' or 'shark bite' (is shark bite the same as a compression fitting?) I know that PEX uses compression- should I look only at fittings that mention PEX or can I assume that they all use compression-type connections?

Also, I am having trouble removing the existing coupling on the larger diameter tubing. I keep turning (counter clockwise) but it doesnt want to come off. Is there a trick to getting those off?? Or do I just need a higher IQ??

one more question: looking at couplings at those web sites: what do "CTS" and "NPS" stand for?

If all else fails, I can just cap those lines because we never use the shower anyway. But still have to get those old fittings off, I guess.


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#4 OFFLINE   joerg68

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Posted 27 September 2018 - 06:15 AM

Have you tried some teflon tape on the threads? It might just stop them from unscrewing by creating more friction.


2014 F350 SCLB 6.2 + 2017 Northstar Arrow

#5 OFFLINE   amcclaran

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Posted 27 September 2018 - 08:22 AM

Have you tried some teflon tape on the threads? It might just stop them from unscrewing by creating more friction.

 

If I can't get the other half of the current fittings off, that may be my only option, but think the compression fittings may be the better choice. I've heard plumbers talk about how good those PEX fittings are.


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#6 OFFLINE   OrrinSackett

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Posted 27 September 2018 - 01:25 PM

 CTS- Copper Tubing Size and NPS- Nominal Pipe Size...... a necessary distinction since 1" copper has different dimensions than say 1" PVC.   I second the idea of going to a Shark Bite type fitting.  If you have enough additional length,  just take a piece of the tubing with you to a real Plumbing Supply house or a Home Depot type place and they should be able to fix you up.



#7 OFFLINE   amcclaran

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Posted 27 September 2018 - 05:30 PM

yeah, still trying to get the connector off of the larger size tubing. I don't think I have any extra length to spare or would just cut it. Maybe it just needs a little man-strength. Will have to get my other half out there to try.

Meanwhile, resealing the Heiki vent all around with another layer of Eternabond web tape. Don't think I did a good job the first time because I didn't take the vent off of the hinges so couldn't really get underneath the back edge very well. MODF! But all the other areas I did on the roof (went over the top of all the butyl caulk) still look great.  I think that was a good 7 or 8 years ago. That is some wonderful stuff!


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#8 OFFLINE   amcclaran

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Posted 01 November 2018 - 12:49 PM

Sharkbite connectors! How much easier could it get?


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#9 OFFLINE   TDWebster

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Posted 02 November 2018 - 04:37 PM

The best bet would be to go to a rv dealer as these appear to be commonly used throughout the industry, but also appears fairly unique to the industry



#10 OFFLINE   Electrojake

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Posted 02 November 2018 - 06:55 PM

When I re-plumbed my 2017 Arrow-U I went to a Lowe's store (like a smaller, cleaner Home Depot) and was pleased to find that they had a bunch of Sharkbite/PEX stuff in the pluming dept.
I purchased a length of blue pipe (cold water) and a length of red pipe (hot water), a bag of clamps, and a crimping tool. A razor type tubing cutter comes in handy too.
 
Then I went on Youtube to learn how to install & remove the pipe clamps without butchering them. The rest is history! 
I made several fresh water plumbing changes to my Arrow that afternoon. No problems (and i'm NO plumber).  :fing32:
 
 
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