Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number USB-734-040-370-016 found under Diskvalve by Tyco Valves And Controls Lp. The National Stock Number assigned to this part is 4820016865051, 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 USB-734-040-370-016.