Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RO3-SS-7(MOD)A-169 found under Valve Pilot Operated Special by A A A Products Co. The National Stock Number assigned to this part is 4810013511494, 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 RO3-SS-7(MOD)A-169.