Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 615-49C248 found under Valve Check by Rix Industries. The National Stock Number assigned to this part is 4820013629328, 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 615-49C248.