alexmet1 Active Member Joined Jul 4, 2013 Messages 38 Reaction score 0 Location London Jul 8, 2013 #1 Was just wondering how necessary an S30 valve cap was with barrels? I have a barrel with just a normal screw on cap and don't know whether it's good enough to use? What's the advantage of having an S30 valve?
Was just wondering how necessary an S30 valve cap was with barrels? I have a barrel with just a normal screw on cap and don't know whether it's good enough to use? What's the advantage of having an S30 valve?
