Retrofit Empty Keg Sensor (Domestic)

Existing Perlick single valve keg couplers can be retrofitted to function as Smart Couplers. Simply replace the probe with Perlick's No. 40152 empty keg sensor.  This allows your Perlick coupler to become a Smart Coupler. The coupler will then sense when a keg is empty and shut off the beer flow and leave the line charged with beer. This will in turn prevent excessive foaming and waste when tapping a fresh keg.