Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DFE20-3A18ESW20 found under by Automation Engineering Co Inc. The National Stock Number assigned to this part is 4810151449858, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like DFE20-3A18ESW20.