Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 11473 found under Bellows Assy Valve by Fairchild Corp. The National Stock Number assigned to this part is 1660000315751, and the Federal Supply Class is 1660 Aircraft Air Conditioning Heating And Pressurizing Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 11473.