Good idea.......

[Charnwood]

...or just something else to leak?

http://www.lift-offradvalves.co.uk/

http://www.ebay.co.uk/itm/Lift-off-...arden_Hearing_Cooling_Air&hash=item564abb4d70

 

[RickMoore]

That's going to be really helpful for a 3m x 600 double double. Many radiators will be too heavy to lift off when full of water. Stupid idea imho

 

[Dan Robinson]

By the time you need to take the rad off, those things will leak like a sieve.

 

[longdogs]

Great idea but as suggested will probably leak or seize up. A better idea would be having the iso on the other side of the valve so that radiator valves can be changed without draining or air-locking

 

[GavThePlumber]

If they were 50p a set, I still wouldn't fit them.