Pex-Al-Pex Crimp ?

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coalboy
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Post Mon. Jun. 30, 2008 6:37 am

I'm going to be useing 1'' pex-al-pex. My Question is, Can you use the crimp rings around fittings,or must you use compression type fittings.


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Steve.N
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Post Mon. Jun. 30, 2008 8:35 am

You must use the compression fittings. The al-pex is a different size than straight pex.
Life without oil heat is sweet !

Bob
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Post Mon. Jun. 30, 2008 10:09 am

Crimp fittings and tools are available for pex al pex. However the sizing is different than for pex. You cannot use pex crimping tools or fittings on pex al pex.

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LsFarm
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Post Mon. Jun. 30, 2008 11:52 am

Personally I wouldn't use a crimp type fitting on Pex-Al-Pex.. the compression fittings I use are very good, have double 'O' rings that can be replaced if needed.. The fitting can be taken apart,, something a crimp connection cannot do.. Plus, if a crimp leaks, you cut it off, buy another connector/fitting and try again, maybe with too-short tubing ... With the compression connector, you use standard tools, you can replace the 'O' rings if needed, and you can even use some RTV sealant if you need...

Greg L
Burning Pea/Buckwheat through an antique stoker [semi retired SSboiler],
Running an Axeman-Anderson 260M boiler burning Pea, About 150-250#per day
Farming, Fixing, Fabricating and Flying: 'spare time' what's that?

coalboy
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Stove/Furnace Make: AxemanAnderson
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Post Sun. Jul. 13, 2008 8:09 am

I have 1" pex-al-pex compression fittings,for 1" pex-al-pex pipe..But it seems like,I'm going to have to ream the pipe real good to get the compression fitting in.Does this sound right. :?:

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218Bee
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Post Sun. Jul. 13, 2008 10:45 am

Yes, you need a good bevel on the pipe. We lubed the fitting heavily and had to wack the fitting in, protecting it with a piece of wood.
Rick

It was just my imagination
running away with me...

coalboy
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Post Sun. Jul. 13, 2008 10:55 am

What did you use as lube?

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218Bee
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Post Sun. Jul. 13, 2008 11:02 am

A tin of "3in1" was the closest thing on the shelf.

They seated pretty well with a little persuasion.

Edited in light of Bobs post.
Last edited by 218Bee on Sun. Jul. 13, 2008 11:12 am, edited 1 time in total.
Rick

It was just my imagination
running away with me...


Bob
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Post Sun. Jul. 13, 2008 11:05 am

I would avoid petroleum based lubricants. Use a silicone grease intended for an "O" ring. If that is not available a soap and water solution would be preferable to petroleum based lubricants.

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LsFarm
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Post Sun. Jul. 13, 2008 12:20 pm

I honestly didn't have any problem sliding the PexAlPex over the O rings.. I used a 'rounding tool' to make sure the tube was round, and put a very slight bevel on the inside of the Pex.. with a pocket knife,, not much of a bevel, at the most a 45* to the aluminum...

I didn't have to force any fittings,, they slide on with a little spit or water.. you could use silicone or similar lube.. use a fitting without O rings as a trial tester,, just to make sure your pex IS round,, this would be the only reason for needing to force the fitting..

Greg L

If all else fails.. get a bigger hammer.. works with dentistry,, but not plumbing !! :lol: :D
Burning Pea/Buckwheat through an antique stoker [semi retired SSboiler],
Running an Axeman-Anderson 260M boiler burning Pea, About 150-250#per day
Farming, Fixing, Fabricating and Flying: 'spare time' what's that?

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Yanche
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Post Sun. Jul. 13, 2008 1:54 pm

While I haven't tried this with PEX, an electric heat gun will warm the pipe and allow it to expand. Works well with other types of flexible plastic piping. I'd try it first on a scrap piece. My heat gun is like a industrial heavy duty hair dryer.
Yanche
Alternate Heating Systems S-130
Stoker Boiler burning Anthracite Pea Coal

biggreen1
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Post Tue. Jul. 15, 2008 6:41 pm

Is there a good online source for pex-al-pex compression fittings?. My local plumbing store has no clue about anything having to do with pex-al-pex.

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LsFarm
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Post Tue. Jul. 15, 2008 8:31 pm

Ebay is where I bought most of mine, or at an outdoor wood boiler outlet.
Here is one seller on ebay:
**Broken Link(s) Removed**
Burning Pea/Buckwheat through an antique stoker [semi retired SSboiler],
Running an Axeman-Anderson 260M boiler burning Pea, About 150-250#per day
Farming, Fixing, Fabricating and Flying: 'spare time' what's that?

coalboy
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Posts: 47
Joined: Sat. May. 17, 2008 4:27 pm
Stove/Furnace Make: AxemanAnderson
Stove/Furnace Model: 1949 AA130
Location: Coal country.shamokin,trevorton area. pa

Post Tue. Jul. 15, 2008 8:40 pm

The Ebay site Lsfarm is talking about.Is where I bought mine.Good service fast shipping.

biggreen1
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Post Tue. Jul. 15, 2008 9:23 pm

Ebay, I should have known. Thank you


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