HomeBrewStuff 2 Product Dual Draft Beer Regulator w/Individual Valves & Safety Pressure Relief Valves Dual Regulator Control Bodies allow for two different pressure settings off of one tank Large adjustment knobs , adjust pressure by hand (no tool required!) 5/16" Barb outlets valve with built in check valves Regulator has a maximum pressure safety system (blow off at 55 to 60 PSI.) Tank Gauge marked for low air, so you can refill before your tank is empty!