(re-post as no reply last time)
I want to remove a couple of radiators to decorate - I have done it many times and the (Twinfast) valve always leaks a little - but I put a tray under to collect the drips. However, this time we are getting a new, light carpet! I want to blank off the valve outlet where the radiator attaches to reduce the risks until I am ready to re-fit the rad.
Question - what do I need to blank off the valve? What do I ask for?