Beer Regulator Double Gauge, Chudnow Solid Brass, American Made, Chudnow Regulator Body with Brass Nipple, Nut with O-ring included Dual Gauges, for Tank Pressure (0-2000 psi)and output pressure to keg (0-60 psi) Assembled in The USA of Domestic and Foreign parts. Shipping Rate is for Continental US ONLY. Pressure Relief valve is external and operates manually and automatically. MFL check valve may vary in color from photo(brass to chome plated brass)