The Valve,safety Relief, cataloged under National Stock Number 4820-01-559-2369, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-559-2369 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Supplementary Features | PRESSURE SETTING IS 0.5 AND VACUUM SETTING IS 0.05 |
| Surface Treatment | ANODIZE AND OXIDE LOCATION NOT OTHERWISE SPECIFIED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| C990HBVBK/0.5/0.5 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-559-2369 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-559-2369: Supplementary Features: PRESSURE SETTING IS 0.5 AND VACUUM SETTING IS 0.05; Surface Treatment: ANODIZE AND OXIDE LOCATION NOT OTHERWISE SPECIFIED; Part Name Assigned by Controlling Agency: DUAL ACTION BREATHER VALVE; End Item Identification: 4935-01-136-0233, SHOP EQUIPMENT,GUIDED MISSILE SYSTEM. 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.