insert for 10mm copper pipe

[ggman]

good morning all.
Just a curiosity! I am using 10 mm pipe copper pipe to connect to a radiator valve.
I have some ordered some 10 mm insert brass insert, but they seems very loose
when inserted in the pipe, i measured up with a vernier and their external diameter is 7.75 mm, the pipe used is 10 mm with 0.7 wall thickness but the internal diameter measured up with the vernier is 8.3 mm that give me an internal tolerance between pipe and insert of 0.55 mm.
Will it be correct? Or will the compression fitting crash the copper pipe?
Please help
Thank you
ggman

 

[paulyoung666]

i may have misunderstood , but why are you trying to use an insert with copper pipe , can i assume your connection is a standard 'nut & olive' fitting

 

[ggman]

They're danfoss valve wich came with a fracture adaptor for 10mm soft copper pipe which i was told need to be internally supported with the mentioned insert.

 

[paulyoung666]

okies , i will back out as i know not

 

[kirkgas]

i have never heard of an insert being req'd for copper, danfoss trv reducer kits are ok if the pipe wall is nice and round, occasionally they leak if the pipe is a bit bashed up, wrap a couple of turns of ptfe tape over the reducer, fit it into valve and tighten it enough to stop it pulling out, but try not to overtighten as this causes more problems

 

[tamz]

You can get inserts for soft copper but i have never used or seen anyone else use them.

A bit like an imperial - metric adaptor for 1/2" - 15mm.......pointless

 

[Plumbstar Tom]

cant you use normal copper or is it too late?

 

[buff]

okies , i will back out as i know not

im with you on this one
bob

 

[Toddyplumb]

I have never used an insert on copper to danfos TRV's . Who / where does it say you need to use them ?

 

[ggman]

Hi toddyplumb
Thank you for your reply.
I am more than happy to hear that I don't need any insert.
But I was told that's a good practice to use insert in soft copper pipe when using compression fitting as the soft copper will squash or deform
I actually purchased the pipe and the insert from BES, on their catalogue is actually stated "insert for 10mm copper pipe, reccomended when using compression fitting.
But I am happy with your expert suggestion.
Regards