Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DWG 65002 1 4IN found under Valve Globe by William Powell Company The. The National Stock Number assigned to this part is 4820012490000, 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 DWG 65002 1 4IN.