Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 831030 found under Stem Overload Valve Steam Turbin by Curtiss Wright Electro Mechanical Corporation Dba Steam And Air Solutions Div Cu. The National Stock Number assigned to this part is 4820011993113, 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 831030.