4820-00-288-8066 (5469A1M30)
NSN 4820-00-288-8066 (NIIN 00-288-8066) is a safety relief valve in Federal Supply Class 4820, Valves, Nonpowered — a valve designed to automatically release excessive pressures. Manufacturer part number 5469A1M30 (Circor Aerospace, Inc., CAGE 91816); also referenced as 1419377 (Navair And Navsea Managed Original); 378-1070 (Lockheed Martin Corporation).
Key specs: pressure tight outlet side; 45 psi maximum single response operating pressure; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); unit of issue EA (each), $42.42 gov standard price; export Schedule B 8481.40.0000. Supersedes 4820-00-698-1037 (1963), 1660-00-613-1206 (1963), 5840-00-565-1794 (1967).