Plumbing Questions? Ask a Plumbing Expert.
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Hi, how are you today?
Im good thanks.
I want to confirm you understand my question.
Yes I believe I understand what you're asking. Are you using pipe stiffeners in the pipe before compressing the coupling?
Good point! Yes I am!
I should tell you that the water pressure is very high and that I am using 180PSI CSA HDPE
Are you using tools that are allowing you to completely tighten down the coupling?
If this connector was improperly installed the first time, does that ruin the connector? What I mean by that is that maybe I didn't have the full length of the poly inside.
Yes, I am using a pipe wrench and a crescent and tightening them to the max but not excessive.
I've reused the couplings before with no problems, so I would say it would be fine.
What is the pressure you're working with? I'm not sure if these couplings have a max working pressure
Is there another style of connector which would install more securely?
I do not know the actual PSI but it is very high. We get water from the lake via a local pump station. We are close to lake level. Others in the development are on much higher ground.
Is there a crimp on style connector?
I was trying to find out if there was a max psi rating for these but didn't find anything on it. There is crimp on fittings but would not recommend if it will be underground
Actually, unless he was wanting me to fail and then have to hire him, I bought the connector from a plumber who lives in the area.
That is interesting. My son was talking about PEX underground and the crimp connections for PEX. So you're saying crimp on connections should not be used underground?
As long as the gaskets and compression ring is in it on both ends and you had the stiffeners in both of the pipe ends it should be a good fitting that would work, you should be able to tighten it to wear all the threads are not visible anymore.
I was always told not to use them underground. However jthere was a couple of times we've used two cinch type rings on each end of the pipes and taped it like crazy to keep dirt away from it
Propress fittings may be a possibility for you, they are high strentgh connections and are approved underground in s of me areas. You would need to rent a high dollar tool however. Plumbing supply stores would be your best bet for these fittings and tool, if you get lucky they may even let you borrow for free with a deposit
The connector on the inside, where the poly joins to the main, does have a separate ring type gasket but the one I am using underground does not. Also, the one inside [make unknown] has little springs joined together. One is broken but it has not been leaking. I still plan to replace it.
I think, based on what I have been able to tell you, that you've answered the question as best as you could.
I have a service request to a local plumber which I will call upon, if after trying it again, I fail.
Im trying to find you a link to a pdf file that will show you what parts should be in the coupling to make a proper connection, this should help you find out if this is a bad fitting and you just need a new one or if you need to try another option
This is a particularly difficult problem because even if my effort tomorrow seems to succeed, it may turn out 2 weeks later that it did not. Making it worse, I am only here once a month so if it leaks, nobody is here to notice it!
Try looking at this pdf, the first picture shows the ring that needs to be on both sides to compress down. And I wanted to make sure that the stiffener you're talking about is a stainless insert that goes into the pipe before putting the coupling on?
Darn! The link won't work. I cut and pasted it.
yes, stainless steel, goes into poly first before connector.
Ok just making sure. You can try this one.
Yes, that worked? But the one which didn't work -- is it even better?
You are very thorough and knowledgeable!
It should have been the same file. The skinny ring that kinda overlaps is a part that can fall out, you need to make sure this is in both ends of the coupling, it is actually two half rings to make a ring
I will have to check to be sure but it could well be that this is the problem!
I do my best to help
You earned the money!
It could be. Not sure if you can buy replacement ones or if you'll have to buy a new coupling
I will get complete new ones!
You're welcome, please dont forget to rate my serviceand you can always come back to this page and ask me anything else on this issue
You quite possibly saved me $300 -- that is what the plumber was going to charge me!
I will indeed rate you -- you're the best!
Sounds quite high if you ask me
Hope you can avoid that cost
It is highway robbery since the hole is dug and we're taking just outside the foundation.
Goodluck to you
Is there anything else?