Mcalpine bath trap spigot size

[Colin Robinson]

Hi , has anybody come across issues with the spigot from a bath trap being too big so that it won't go into the bore of the bath waste ?
Basically the spigot on my mcalpine trap measures 41 and the waste bore is 40 .
I tried another anti vac mcalpine waste and that's the same .
I know they seal on the rubber but they don't fit .
Any ideas ?
Thanks

 

[CBW]

I used to have issues with it years ago, but that could have been me as an apprentice. Any photos?

 

[Madrab]

Yes, but it's not the spigot that's at issue, it's ID of the waste, some manufacturers don't follow standard sizing and some are narrower. Use a file to narrow the flange a little, should eventually fit.

 

[Colin Robinson]

Yeah , it's definitely the waste bore .
I'll file the trap down a bit .
The waste was a decent branded one as well

 

[Hugh Jaleak]

Seem to recall they fit Solvent weld waste ok, but wouldn't go into Push Fit pipe. Just used a Polypipe trap without the inner section when required.

 

[CBW]

I think he means the waste rather than the thin trap outlet end.

 

[Hugh Jaleak]

It has been a while.

 

[Madrab]

I've seen me cut that internal centre section out of the compression end of a McAlpine with a stanley before now too when an existing thicker push fit waste wouldn't fit. Especially when the only alternative was getting a Floplast from the local shed.