4820-01-220-8828 (200-015)
NSN 4820-01-220-8828 (NIIN 01-220-8828) is a safety relief valve in Federal Supply Class 4820, Valves, Nonpowered — a valve designed to automatically release excessive pressures. Manufacturer part number 200-015 (Kirby Morgan Dive Systems Inc, CAGE 58366); also referenced as 200-017 (Hytech-Pommec B.V.); 9109-20 (Aqualung USA, Inc); 4592475 (Naval Air Warfare Center Weapons Div).
Key specs: 190 psi maximum single response operating pressure; full characteristics table below. NIIN assigned November 1985; DEMIL A (none required); unit of issue EA (each), $96.37 gov standard price; export Schedule B 8481.40.0000; ships at 0.06 lb / 0.0093 cu ft. Supersedes 4820-01-454-9734 (2001).