Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PB46646 ITEM NO 2 found under Valve Angle by Cs Controls Incorporated. The National Stock Number assigned to this part is 4820014651421, 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 PB46646 ITEM NO 2.