Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 201793 PIECE 13 found under Yoke Valve by Huntington Ingalls Incorporated. The National Stock Number assigned to this part is 4820012213617, 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 201793 PIECE 13.