Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SS-9K-83XK found under Parts Kit Ball Valve by Whitey Co. The National Stock Number assigned to this part is 4820012971981, 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 SS-9K-83XK.