4820-01-313-8648 (NMP-1195)
NSN 4820-01-313-8648 (NIIN 01-313-8648) is a safety relief valve in Federal Supply Class 4820, Valves, Nonpowered — a valve designed to automatically release excessive pressures. Manufacturer part number NMP-1195; also referenced as D0-80F NMP-1195 491T546PSI, NMP-1195 D0-80F 491T546PSI (Emerson Automation Solutions Final).
Key specs: 3705 psi maximum single response operating pressure; full characteristics table below. NIIN assigned January 1990; DEMIL A (none required); unit of issue EA (each), $3,035.63 gov standard price; export Schedule B 8481.40.0000.