4810-01-351-6539 (1030-0022)
NSN 4810-01-351-6539 (NIIN 01-351-6539) is a valve opening indicator in Federal Supply Class 4810, Valves, Powered — an item specifically designed to show the open, intermediate, and closed disk relationship to the valve seat. Manufacturer part number 1030-0022 (Emerson Process Management Valve, CAGE 01379).
NIIN assigned January 1992; DEMIL A (none required); unit of issue EA (each), $354.31 gov standard price; export Schedule B 8481.90.9090.