The Stem,fluid Valve, cataloged under National Stock Number 4820-01-433-2569, 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2 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-433-2569 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE |
| Material | NICKEL AND COPPER ALLOY |
| 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 |
|---|---|
| V1E10410 ITEM 12 | 5/2 Secondary reference U.S. Government activity |
| V1E1041012 | 5/2 Secondary reference U.S. Government activity |
| V2D11631-8DA | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-433-2569 is a Stem,fluid Valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-433-2569: Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE; Special Features: USED ON QUIET PRESSURE REDUCING VALVE; End Item Identification: NAVY WEAPON SYSTEM CODE JG, SEAWOLF CLASS SSN; Material: NICKEL AND COPPER ALLOY. 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.