Pressurised CO2 - will this work?

[nickmcmechan]

http://cgi.ebay.co.uk/Aquarium-Sing...ryZ66794QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

would this work with a CO2 bottle?

what else would i need?

 

[Squawkbert]

I don't think so - I see no room for a diaphragm, so I think it's just a valve and the pressure gauge is just for tank pressure. You need a regulator or else your needle valve would see tank pressure (~700PSI, which they don't like).

 

[Mgamer20o0]

need a double gauge regulator.