Refilling sodastream cylinder issue

[Hangover68]

I bought an adapter so that i can refill a kegland sodastream cylinder but i'm not getting any gas flow when i open the valve, i watched the video a few times and and got the process right.
Refilling from a 2.6kg gasguys cylinder that is approx. 3/4 full, tried a branded sodastream cylinder but still no gas flow.
The large cylinder doesn't have the rpv as shown in the KL video.

 

[duncbrewer]

Not sure about the kegland cylinders, some variation of type on the genuine sodastream cylinders in that the one with larger flat " button" in the top of it needs to be filled from a very slow start otherwise the valve paradoxically shuts off and you can't put gas in.
You won't of course get gas into a full cylinder but I expect you know it's empty.
Chilling cylinder in freezer does help a lot.

 

[Hangover68]

Found the problem, the 2.6kg cylinder WAS 3/4 full but i must have a leak somewhere so its now empty.
Will exchange a genuine SS cyclinder on the way to the party and arrange for a gasguys swap during the week for the 2.6.

 

[duncbrewer]

Found the problem, the 2.6kg cylinder WAS 3/4 full but i must have a leak somewhere so its now empty.
Will exchange a genuine SS cyclinder on the way to the party and arrange for a gasguys swap during the week for the 2.6.

What a pain. Should be plain sailing with a refill.