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Stadler Pex Problem
HomerJSmith
Member Posts: 2,640
The house is being remodeled. It has infloor heating circa 1995. The manifolds and tubing are Stadler which was bought out by Viega. Removing the carpeting and tack strips, a nail was discovered puncturing a pex tube, also the plumber ruptured a tube moving a water closet flange. A repair has to be made and the repair covered with gyp-crete. The question is how is it to be made.
I can't read the markings on the tube as they are smeared and missing. It is clear Stadler tube with o2 barrier with 5 orange stripes running the length of the tube. The OD of the tube is .569 and the ID is .390. The tube is electrically cross-linked which should make it a class C tube, but it act like a class A tube as far as expandability goes. I think that class C tube is not expandable with it's fittings? I can't find a union fitting that size. 3/8" is too small and 1/2" is too large for a class C tube.
What I am thinking is to use a Sharkbite 1/2" X 1/2" brass pex coupling, expand the tube to just barely insert the coupling, wait for the pex to shrink back and use stainless steel PEX pinch clamp crimp fittings (Oetiker Style). I would cover the connection with shrink tubing.
Do you guys have any good ideas, what do you think?
I can't read the markings on the tube as they are smeared and missing. It is clear Stadler tube with o2 barrier with 5 orange stripes running the length of the tube. The OD of the tube is .569 and the ID is .390. The tube is electrically cross-linked which should make it a class C tube, but it act like a class A tube as far as expandability goes. I think that class C tube is not expandable with it's fittings? I can't find a union fitting that size. 3/8" is too small and 1/2" is too large for a class C tube.
What I am thinking is to use a Sharkbite 1/2" X 1/2" brass pex coupling, expand the tube to just barely insert the coupling, wait for the pex to shrink back and use stainless steel PEX pinch clamp crimp fittings (Oetiker Style). I would cover the connection with shrink tubing.
Do you guys have any good ideas, what do you think?
0
Comments
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This was helpful last year...
Thanks to Hot Rod.
https://forum.heatinghelp.com/discussion/163934/stadler-pex-size0 -
kcopp, boy that was a fast reply. This is a little different than Hot Rod was discussing. I did have a problem a while back with In-Floor pex when I had to replace the in-floor plastic manifolds with Caleffi manifolds. The pex was the wrong size for the Caleffi adapters. There was a tolerance range for the Caleffi adapters which was out of range for the in-floor pex. I solved the problem by replacing the existing o-rings on the adapters with new EPDM o-rings of a size that would work.
It worked great. I guess I already said that earlier.0 -
Take a closer look at this link:
https://us.v-cdn.net/5021738/uploads/editor/0d/7dyw2pk4erk7.jpg
Your tubing sounds metric, no?8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour
Two btu per sq ft for degree difference for a slab
1 -
I would think that Stadler would be US measurements. The OD is 14.45mm and the ID is 9.90mm.
Those charts are about manifold adapters. I need information on pex couplings, one tube to another and what you think about using Sharkbite couplings to connect two tubes together and expanding the pex.
I don't want a leak under a hardwood floor. This is important.0 -
What I am thinking is to use a Sharkbite 1/2" X 1/2" brass pex coupling, expand the tube to just barely insert the coupling, wait for the pex to shrink back and use stainless steel PEX pinch clamp crimp fittings (Oetiker Style). I would cover the connection with shrink tubing.
Am a neophyte, buut why not take the coupling to a machine shop and ask them to turn it down to fit the pex. The clamp fittings should hold even on a smooth fitting.0 -
The Caleffi universal pex fittings have a 2mm OD tolerance range, .5 mm ID
1/2" pex is 5/8 OD .625 or 15.8 mmBob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0
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