Smith™ Flow Gauge Regulator 31-50-580Genuine Smith™ 31-50-580 is a medium-duty, compact flow gauge regulator for Argon and Argon/CO2 shielding gases. It features a brass body with nickel plated bonnet, brass "T" adjusting screw and shatter-resistant 2 inch inlet and outlet pressure gauges. The 31-50-580 is ideal for light to medium-duty MIG and TIG welding applications.Smith 31 series flow gauge regulators are designed to maintain consistent gas delivery pressure and minimize outlet pressure "creep." They represent the latest in extreme dependability, accuracy and durability in gas regulation. They are backed by Smith's Three Year Regulator Warranty.Features Neoprene composite diaphragm Resists corrosion for extended service life. Color-coded labelSupplies performance capabilities, easy gas service identification and technical information. External relief valve Protects regulator from damage due to inadvertent high-pressure surge. Relief valve will release excessive pressure and automatically reset. Brass body and nickel-plated bonnet Protects against corrosion. Shatter-resistant 2-inch gauges Easy-to-read gauges with polycarbonate lens covers for protection. Dual filters including Sure Seat™ Protects high-pressure seat from debris for reliable operation and long service life