Nos, we also have a Ballistic, a 6.5m 2008. You helped us when we first got it over fitting an auxiliary engine bracket.
We had a valve adapter supplied with our boat that semi fitted the values but wasn't quite good enough to inflate the tubes without adding insulating tape to make it work. I wanted a proper value adapter and after drawing a blank with the Broker, where we had purchased the boat, (who had absolutely no idea what values were fitted to the boat that they import or how to find that out), I made contact with Ballistic directly in South Africa and spoke to the owner of the company, Ludolph Toerien. He was very helpful and told me that the 2008 model has ‘Cerdi’ valves fitted. I presume they have Ceredi on other years because every Ballistic I have seen has the same values as ours.
Ceredi are based in Italy (email@example.com) but I sourced an adapter from Rib Shop in the UK (Rib - inflatable boat & outboard parts, repair & service centre
). It would be worth ringing them (01489 556809) to see if they can supply you with the value you need. I have always found them very helpful when I have been sourcing bits and pieces, Good luck with solving it, with best regards, Phil.