Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RK-345-2 found under Parts Kit Valve by Specialty And Ball Valve Engineering. The National Stock Number assigned to this part is 4820015095852, 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 RK-345-2.