This short (two inch overall) ball valve has a keg coupler valve thread and is used specifically to turn off the beer flow from a standard keg coupler. This thread will not fit a 1/2″ outlet. You’ll also find this valve on both ends of the Micromatic wash-head coupler. This is a very popular way to control product flow when transferring from one vessel to another. A must have for keg users!
Shut-Off Ball Valve