Quote Originally Posted by Danjr1 View Post
If i wish to use a paintball tank as a buffer, what do people do for a fitment in place of the on/off valve or the pin valve? I'm thinking i could just drill the pin section out of a pin valve and use that?
That's right use the pin valve and drill the internals out, the burst disc take it off and keep it as a spare, and the hole either blank it off or put a pressure gauge in.

For pneumatic fittings I use this ebay shop, he's got metal push fittings good for 15bar, much better than the plastic ones.
http://stores.ebay.co.uk/cpmpneumatics?_trksid=p2047675.l2563