4320-01-083-1754 (1074-0001)
NSN 4320-01-083-1754 (NIIN 01-083-1754) is a valve flap in Federal Supply Class 4320, Power And Hand Pumps. Manufacturer part number 1074-0001 (Weil-Mclain A Marley Co, CAGE 80652); also referenced as 1074-1 (Weil-Mclain A Marley Co).
NIIN assigned September 1979; DEMIL A (none required); unit of issue EA (each), $13.13 gov standard price; ships at 0.04 lb / 0.003 cu ft.