Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 108-2ER ITEM 4 found under Valve Calibrated Fl by Oil Capital Valve Company. The National Stock Number assigned to this part is 4820011893242, 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 108-2ER ITEM 4.