car flex

[PC Chris]

Does any one knows if I can directly glue nonmetallic flexible conduit(car flex) in to a pvc coupling,or do I have to use a proper changeover (pvc female adapter +straight car flex connector)?

 

[ActionDave]

Welcome to the forum.

I don't think carflex is meant to be glued at all. I glued up a scrap of half inch a coupling just to see how it holds.

 

[lauraj]

From the Carlon website:

Can you glue Carflex directly into Carlon PVC fittings?
Sorry, but fittings are not allowed to be glued or solvent-cemented to Carflex
directly. Only a mechanical connection is allowed and you can only use
Liquidtight Flexible Nonmetallic Type B fittings with our Carflex.

 

[Dennis Alwon]

From the Carlon website:

Can you glue Carflex directly into Carlon PVC fittings?
Sorry, but fittings are not allowed to be glued or solvent-cemented to Carflex
directly. Only a mechanical connection is allowed and you can only use
Liquidtight Flexible Nonmetallic Type B fittings with our Carflex.

That's exactly correct as per 110.3(B) would require, however I have seen it done and it does hold true but it could be turned down. Not sure if it would keep the liquid tight connection. Best to do it as per manufacturers requirements

 

[ActionDave]

Checked on my test piece of carflex today and the outcome of the test was a failure of the glue joint. It did not pass the cowboy engineer test meaning I could pull it apart with my hands.

 

[Knuckle Dragger]

It is tempting, but no you should glue it to other fittings I do not believe it is rated to be used that way.

 

[Fulthrotl]

Does any one knows if I can directly glue nonmetallic flexible conduit(car flex) in to a pvc coupling,or do I have to use a proper changeover (pvc female adapter +straight car flex connector)?

people do it, but it's not approved by the manufacturer....

it also seems the glue weakens the pvc at the bottom of
the ribs, where it's thinner....

and it would be a level ten sucky thing to have to change a whole
building out, after you'd pulled wire.....

:weeping:

 

[ActionDave]

I'm going to try a second experiment with Gorilla glue when I get the chance.

 

[peter d]

It all depends on the brand of NMLTC you buy. Some of it fits perfectly into a PVC fitting, others not so much. Not that I have ever installed it that way.

 

[Mystic Pools]

I have seen it done by a fairly large electrical company some time ago and it passed inspection in Bergen County NJ.

The electrician at this site told me it was acceptable. I guess the inspector looked the other way, didn't notice or based on the company's previous performances of passing, it was never actually looked at.

I can tell you that NM flex is very similar physically (rib makeup) to flexible spa hose for pool/spa plumbing applications. The glue joints are not very reliable-especially under pressure. It's basically crap for my work. Insects are known to eat through it. We don't use it.

 

[kwired]

I have seen it done by a fairly large electrical company some time ago and it passed inspection in Bergen County NJ.

The electrician at this site told me it was acceptable. I guess the inspector looked the other way, didn't notice or based on the company's previous performances of passing, it was never actually looked at.

I can tell you that NM flex is very similar physically (rib makeup) to flexible spa hose for pool/spa plumbing applications. The glue joints are not very reliable-especially under pressure. It's basically crap for my work. Insects are known to eat through it. We don't use it.

You must have some really nasty insects where you live, I doubt I have ever seen rodents eat FNMC.

 

[Mystic Pools]

You must have some really nasty insects where you live, I doubt I have ever seen rodents eat FNMC.

Just some nasty people

Termites have known to eat flexible spa hose.

I have not seen a rodents eat flexible conduit but they do chew on flexible gas lines for BBQ's. Kaboom