Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 514K87 found under Kit Valve Gasket And Seal by Ross Operating Valve Co. The National Stock Number assigned to this part is 4820011574966, 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 514K87.