Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 30053 found under Stem And Head Valve by Dresser Rand Co. The National Stock Number assigned to this part is 2825003904064, and the Federal Supply Class is 2825 Steam Turbines And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 30053.