Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 30B RK18 T V17 found under Parts Kit Ball Valve by Flowserve Corporation. The National Stock Number assigned to this part is 4820015789651, 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 30B RK18 T V17.