While there is air in the tank, it is pretty much impossible for paint to get in to the tank - the pressure of air trying to push *out* of the tank, will stop anything trying to push it's way *in*.
So, not an issue at the time that paintball actually impacts.
Before refilling the tank, I would suggest emptying it, then removing the fill valve and cleaning it thoroughly. You'll need some teflon tape to reseal the threads - always a handy thing to carry with you. I prefer removable strength threadlock, but that's no good for patching things up at the field - you need time for it to cure.
Better solution all round? Always use a fill valve cover - stop paint getting in to the valve in the first place.
It's just like a battle zone, you got a bottle and you're on your own.
Gotta be a Scotch or a Kamikaze, none of those other weapons will faze me.
Hundred, hundred, hundred bottles on the wall, you wonder if you can drink them all.
Got to go home by 1am, the bottle wins the battle again.
Husker Du - "First of the last calls"
Back when I was popular
Supporting a friend:
HustlePaintball.com for Spyder paintball guns, Dye Markers, WDP Angel 1 and of course the Hustle Hotties.