The air release caps are awesome. You spill way less air when venting the bags if you are sloppy like me. You cant just drill your own because the air release valves are longer so when you loosen it it is still threaded in. I was going to make my own but it wasnt going to work. 5-6 bucks is worth it IMO. and then you have the original as a spare.
Oh I see. Un-screw it until the air flows out the side threads. I received a wally plug for each opening plus the quick connect. Why not provide a air release and one wally along with the quick connect instead.
Another question, how reliable are the quick connections with the ring and tabs?
I drilled a hole through the center of mine and then 4 smaller holes perpendicular to that about a few threads down from the "O" rings. I leave it unscrewed a few turns when filling, then just tighten the cap once its full... works perfect and you dont have to keep a constant eye on it when filling
they only cost 4.99. if you drill the reg. cap you need to drill vertically and horizontally. I would just buy one for 4.99. They work ok, but I usually just burp mine through one of my filler valves, its just easier to me anyway......