fitting new radiator

[tellytv]

Need some advice, I've removed an old radiator to fit a new one., However need the fittings for the new radiator

So I'm guessing I'll have to buy a new radiator TRV to get the fittings, So I might aswell fit a new TRV?

How would I tell what size I need as they come in 10mm and 15mm?

I've got a 15mm blanking nut on the fitting at the moment, so would 15mm be the right size?

http://www.plumbworld.co.uk/honeywell-vt15-15mm-759-1355

Cheers

 

[45yearsagasman]

That will do perfectly. The link shows a 15mm TRV. The thread is 1/2" BSP, and will screw into your new rad. Use a few turns of ptfe tape to seal the threads, and a bit of jointing paste on the copper olive in the compression joint. You can use tape on the olive if you want, just a couple of turns.

 

[tellytv]

Cheers for the quick response, I was looking at a new lockshield as I need the fitting to put in the other side of the radiator.

However on copper pipe which is there now, I've got a 15mm blanking nut on the TRV side, I tried putting one on the lockshield side, however a 15mm one was too small but a 22mm blanking nut was too big.

most places I've looked you can only get 15mm lockshields, So would this work or does it sound like I need a bigger one?

Cheers