the gulp...3 o-rings....killer keg ... 1 o-ring....purpose for three on the gulp...you can set it to run kee-kees without changing a thing, remove the top o-ring you got yelps ...remove the second o-ring you got jake yelps and gobble....definitely a difference, with the gulp it has better directional because of the added length. You can run it like a regular tube just put the o-ring where you like it.....instead of having the three on.