What type of pipe is this?

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ED W.

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DSCN1181.JPG Hello! Probably an odd question, but I'm coming into the middle of a project someone else started that I have to finish....We bought a new place recently and I'm finishing a boiler installation that the previous owner (or somebody, long story) started. Its a wood fired boiler, located in the garage and piped into the house. They had the pipe already laid and buried in the ground, I need to attach it to copper on both ends and a few other things. BUT... I thought it was PEX pipe (admittedly I'm not very familiar with PEX, still old-school with copper myself) It appears not to be. There are no markings on it whatsoever, which is perplexing to say the least. Measures 1" ID, and a 1" pex clamp-collar type fitting swims inside it. A brass barbed fitting like you'd use for Poly fits ok in one line, but loose enough to cause trouble in the other. A pair of standard screw-type hose clamps wont even begin to compress it. Any ideas what this pipe is and what type of fittings I need to connect to copper? I should add that 1 1/4" barbed fitting is way too big...
 
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Diehard

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View attachment 22688 Hello! Probably an odd question, but I'm coming into the middle of a project someone else started that I have to finish....We bought a new place recently and I'm finishing a boiler installation that the previous owner (or somebody, long story) started. Its a wood fired boiler, located in the garage and piped into the house. They had the pipe already laid and buried in the ground, I need to attach it to copper on both ends and a few other things. BUT... I thought it was PEX pipe (admittedly I'm not very familiar with PEX, still old-school with copper myself) It appears not to be. There are no markings on it whatsoever, which is perplexing to say the least. Measures 1" ID, and a 1" pex clamp-collar type fitting swims inside it. A brass barbed fitting like you'd use for Poly fits ok in one line, but loose enough to cause trouble in the other. A pair of standard screw-type hose clamps wont even begin to compress it. Any ideas what this pipe is and what type of fittings I need to connect to copper? I should add that 1 1/4" barbed fitting is way too big...
Don't know for sure.
Are you sure the markings are not embossed and hard to see?
 

Jeff Handy

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Diehard

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A side note for the OP(ED W.).
The size that's typically used to describe a pipe size is actually what is referred to as their "nominal" size.
For example nothing on a 1" pipe actually measures 1".

Dimensions of PEX SDR 9 (CTS) tube according ASTM F876 Standard Specification for Crosslinked Polyethylene (PEX) Tubing:

Nominal pipe size: 1 1/4"
Outside diameter: 1.375"
Inside diameter: 1.069"

EDIT: BTW...The O.D. of PEX was made to match that of copper, allowing you to use a variety of transitions fittings.

When the tubing or pipe has the option to change the wall thickness(schedule or type), the changes are made to the I.D. and not the O.D.
 
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ED W.

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Hey! Thank you all! I checked both ends of both pipes over again, there may have been some writing on one spot, but its so worn away that it just looks like a really poor and faded barcode now. I'm assuming maybe from being pulled through the shielding pipes in the ground. I'm going to check the links that J Handy posted above..... This would be a WHOLE lot easier if could walk into a store and buy fittings and see what fits instead of special ordering things I'm guessing about. But anything over 3/4" most places seem scared to death of carrying, and FORGET 1 1/4"!
 

ED W.

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Try: https://www.supplyhouse.com/PEX-Crimp-Fittings-543000 and related pages there. I assumed crimp fittings (Type B PEX), but this site has something for everyone, and their customer support has been good for me.
You aren't kidding, they do have a lot of good stuff! I also had to deal with customer support (adding an item onto an order) and they were absolutely great. Search engine is a little wonky though, lol!
 
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