If you want an easy way to balance your beer lines this is the way to do it.  Please be aware that even in the fully open position these FC disconnects do have some inherent flow resistance so you should use either shorter line or larger ID line that you would when compared with traditional ball lock disconnects.  One of the benefits of FC disconnects is you don't need to rely on the small ID or line length to apply flow resistance so it would not make sense to use long lines or small ID lines as well as this is the job of the FC device.

This is perfect for people who want to serve a large range of beverages with differing carbonation levels as it gives you the ability to adjust resistance easily. Now with the added benefit of duotight fittings built in.

This particular ball lock disconnect has been designed to suit 8mm Beer Line. Due to the integrated duotight fitting the line will simply push directly into this fitting.