Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NO PRIMARY REF14-446-8321 found under Valve Regulating Fl by This Ncage Is Used To Inform That. The National Stock Number assigned to this part is 1650144468321, and the Federal Supply Class is 1650 Aircraft Hydraulic Vacuum And De-Icing System Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NO PRIMARY REF14-446-8321.