Foam on Beer Detectors (FOB) help to reduce beer waste and maximize profit by shutting off the flow to the tap as soon as the keg empties. This eliminates the spitting and spraying that usually happens when a keg "blows". And because the FOB-DFC keeps the supply lines full of beer, even when a keg blows, you get instant beer from a freshly tapped keg instead of wasting time and money pouring off foam. It's made of "Engineering Grade" plastic for strength and durability and can be installed in less than 5 minutes. FOB-DFC can be locked into an "open" position and remain on the keg connector or when the supply lines are being cleaned. Cleaning solutions can be sent through the unit in either direction. It can be easily disassembled by those who prefer hand cleaning.