The Valve,safety Relief, cataloged under National Stock Number 4820-01-449-5951, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Air Armament Center/ En. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-449-5951 |
| Primary Part Number | 9484920 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Air Armament Center/ En |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Style Designator | SCREW-IN CARTRIDGE |
| Disk Loading Method | SPRING |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING BODY |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 9484920 PRIMARY | Air Armament Center/ En (USA) |
| Reference | Meaning |
|---|---|
| 10124739 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 4820-01-449-5951 is a Valve,safety Relief, manufactured by Air Armament Center/ En, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-449-5951 has 1 manufacturer part number on file: 9484920 (Air Armament Center/ En).
Key specifications for 9484920: Flow Control Device: DISK; Style Designator: SCREW-IN CARTRIDGE; Disk Loading Method: SPRING; Special Features: CARTRIDGE TYPE VALVE. 6 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.
NSN 4820-01-449-5951 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.