Replacing a bleed nipple

[mayonline]

Hi, I seem to have lost a bleed nipple from one of my rads somehow. It’s a double rad, one side of the rad has a nipple, the other is gone and I need to bleed it to stop the bubbling noise.

How can I fix this please? Is it possible to buy a new one and if so how do I know what to ask for? Is there perhaps a way to swap the one I have with the one I don't have? I suspect not, but just trying to save money. I suspect also that the fix will involve draining the whole system, would that be correct?

The rad has a TRV, maybe of I switch this off, it would help and prevent the need to drain the whole system (if that is actually requried)?

Photos show the front half of the rads which has the bleed nipple and the rear half which doesn't

BTW, I have an unvented system.

Thank you - Paul

 

[Basher]

You can buy a replacement bleed screw, but there are different sizes.
Either shut both radiator valves (ideally replace the TRV head with the decorators cap that would have originally been provided), remove the other bleed screw and take it along to a plumbers merchant, OR
try and identify the size you have from the selection available on-line, eg:

RADIATOR BLEED AIR VENT VALVES SCREWS - ALL TYPES STEEL PANEL / CAST IRON + KEYS | eBay

Look at this item 321755703298 - Selection Kit Of Most Popular Steel Radiator Bleed Screws. Select the TYPE required and look at the photos of radiators that use this bleed screw. BLEED KEYS AVAIABLE 9 - SIZES.

www.ebay.co.uk

(NB Plenty of merchants advertising elsewhere)