U Coupler Brand MixMaster™ All you need to do Pattern:Gray Camo All you need to do is simply type in your text and we will custom design this beautifully handcrafted wooden sign just for you one that your guests are sure to appreciate and one you can feel good about during your bar service All keg couplers are equipped with internal safety relief devices which when functioning with other relief devices in the system will prevent a keg from reaching pressures in excess of recommended working pressures A specially designed back flow check valve prevents the back up of liquid into the gas line and eliminates the need for a coupling washer between the nut and the coupling body