This valve has remarkable flow properties. So much so that nasa has hired away one of our tech monkeys into a senior design engineering postion, we are so screwed now. What does flow mean, well I was thinking about it and I am not quite to sure. I havent taken my fluid dynamics refresher course at cal tech. I believe it means you can jam more air into this valve than a stock one, so you get better air efficiency so instead of waiting in air lines you can wait in the vip evil lounge line.