Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BLD9397 02 found under Valve Safety Relief by Brownell Inc. The National Stock Number assigned to this part is 4820015386178, 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 BLD9397 02.