Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 122-139-101 found under Plate Valving by Era Mfg Co. The National Stock Number assigned to this part is 4310000052018, and the Federal Supply Class is 4310 Compressors And Vacuum Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 122-139-101.