Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AT1P-2239 found under Valve Ball by Accutemp Products Inc. The National Stock Number assigned to this part is 4820016419872, 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 AT1P-2239.