Primary Single Gauge-Beer CO2 Regulator, FOR BEVERAGE USE Primary Single Gauge-Beer CO2 Regulator Features:Built for durability: forged brass body, accurate machining, chrome plated finish. Nickel-plated valve seats for high corrosion resistance. Constant pressure supply at high output flow rates. Easy to use dial knob for pressure adjustment. Built in CO² resistant, long lasting solid Nylon ...