Hansen couplings are designed to facilitate quick, reliable and pressure-tight connections in hoses and tubes of breathing equipment. These units feature a brass body for maximum corrosion resistance and colour-coded sleeves for easy identification of oxygen (green) and acetylene (red) based Series. They are further integrated with a sleeve-type locking design for preventing system damage and leakage of fluids, and nitrile seals for an improved resistance to oil and fuel. Choose from a wide variety of these 600 & 700 Series quick connect couplings available in 1/4, 3/8 and 5/16 inch barb size options on Raptor Supplies.