Blanking nut for stopcock

[Richieduliban87]

A 3/4 inch blanking nut doesn’t fit this ancient stop cock. Would a 22mm one most likely work?

 

[denso13]

Would a 22mm one most likely work?

Not necessarily. Do you still have the pipe and nut that used to be fitted to it?

 

[Madrab]

Yup, the old imperials are usually a 1" blank if I remember but with old fittings you can never be sure.

 

[JohnD]

Measure it.

BSP size names are surprisingly different to their measured dimensions, but you can look them up when you know the actual diameter.

 

[CBW]

Any reason for just blanking off? If you intend to leave it, then it would be classed as a dead leg in the system and stagnant water could develop. The fitting could even be the manipulative compression type.

 

[Richieduliban87]

The 22mm worked in the end.

I am blanking it off because this pipe is connected to the two flats below and want my own feed from the loft separate to theirs.

I will remove the entire pipe section once i get the bath off, and the main pipe has a convenient tee to which I can just put a cap on. Does that sound okay @Chris_W?