Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RDM-820-NF-3W-114 ITEM 5 found under Diaphragm Actuator by Metrex Valve Corp. The National Stock Number assigned to this part is 4820013897752, 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 RDM-820-NF-3W-114 ITEM 5.