Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 806-9609 found under Regulator Compressed Gas by Airco Welding Products. The National Stock Number assigned to this part is 4820002417599, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 806-9609.