Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D664-1026 found under Expansion Valve Assembly by Gas Equipment Engineering. The National Stock Number assigned to this part is 3655000187799, and the Federal Supply Class is 3655 Gas Generating And Dispensing Systems Fixed Or Mobile. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D664-1026.