Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 04S808-213 found under Seat Valve by A W Chesterton Company. The National Stock Number assigned to this part is 4810006998001, 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 04S808-213.