Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 19020 found under Parts Kit Electro Pneumatic Actu by F S Welsford Company. The National Stock Number assigned to this part is 4810015916315, 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 19020.