Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SET55 found under Seat Valve by Curtiss Wright Electro Mechanical Corporation Dba Steam And Air Solutions Div Cu. The National Stock Number assigned to this part is 4810001464573, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SET55.