Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 122-00 found under Stem Adjusting Piece Valve by Trac Regulators Inc. The National Stock Number assigned to this part is 4820011957467, 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 122-00.