The Taprite CO2 Gas Regulator Series 3740 is a high-quality gas welding regulator designed for use with carbon dioxide (CO2) gas. Made in the United States by Taprite, this unit is specifically designed for welding applications and offers precise control over gas flow. With its durable construction and reliable performance, this gas regulator is a key piece of equipment for businesses and individuals in the metalworking and manufacturing industries. I used for it beer.