Isnt that still a screw in one? I cant reall ytranslate very well but in picture it looks like the one i`ve already got - http://www.ebay.co.uk/itm/NEW-MOTORC...item33688e5436

Thats the problem, the threaded ones take ages to unscrew off the valve after filling and by the time its done, all the air has escaped.

I need one that simply clips on with friction or a push over clip, rather than thread.