after bleeding rads, the pressure dropped to less than 1bar . found integral filling adaptor with key in, however when key is turned there does not seem to be any rise in pressure. i see the key protrudes thru' the valve and only allows key to turn about 1/4 of turn. is there something I'm missing

phil byrne, October 2008

There is a grey knob next the key hole, turn that to let the water thru.

LTGF, October 2008

key turns just to lock in, there should be small plastic knob to turn to allow water in.

iain, October 2008