old copper 23mm pipe?

[DP]

I have come across this 'heavy' weight too, both in 1/2" and 3/4. 1/2" easily sorted by using 16 mm fitting. 3/4 is a challenge for the elbow and bastard file

Somewhere I have the fittings too for both sizes.

 

[catlad]

Agile the pipes were located in side the building but on the external solid wall. I phoned him a bit ago to see how he got on and he came to your conclusion Agile that the pipes had expanded when he compared one of the old fitting with a new fitting and they were the same size. So another gold star for you Agile and thanks for all the replies.

 

[Charnwood]

I do not know what 20 thread is

It was a thick-walled copper that could be threaded (a Whitworth thread IIRC). Compression and endfeed adaptors are available.
Can't remember what the ODs were.

 

[doitall]

Standard BSP thread Charnwood same sizes as steel.

 

[Ol Baggins]

Just catching up on old thread but it's relevant to me. Had same problem with bath feeds under bath. Took my pipe to local supplier ol boy in shop said it was an old french size, 23.5mm. Had to use a Phil mac variable stop for alko pipe as 22mm fittings nowhere near just thought I'd share it in case useful to anyone else.

 

[Nige F]

Did it have French lettering on it ?

 

[Ol Baggins]

Hi Nige f no nothing on it. Further down the line it has prestex 22mm fittings on the cold side. The hot side cant tell as theres years of paint on couplings. Nowhere near a freezing zone tho as in bathroom under bath. Wonder if hot can 'swell' slightly over the decades?