Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 7700-19A-12 found under Seat Exhalation Valve by North Safety Products L L C. The National Stock Number assigned to this part is 4240012503599, and the Federal Supply Class is 4240 Safety And Rescue Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 7700-19A-12.