4810-01-324-3259 (83-83539)
NSN 4810-01-324-3259 (NIIN 01-324-3259) is a butterfly valve in Federal Supply Class 4810, Valves, Powered — a valve that controls flow by a circular disk, or a pair of semicircular disks, attached to a common spindle or lever turning on a diametral axis. Manufacturer part number 83-83539 (Aeronautical And Support Equipment, CAGE 07878); also referenced as 89121272 (Aeronautical And Support Equipment); 539 (Bay State Controls Corporation).
Key specs: 50 psi maximum single response operating pressure; full characteristics table below. NIIN assigned August 1990; DEMIL A (none required); export Schedule B 8481.80.9050; ships at 37 lb / 4 cu ft.