The Quiet Vent Assembly, cataloged under National Stock Number 4820-01-256-8418, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-256-8418 |
| Item Name | Quiet Vent Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| 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 |
|---|---|
| S3C10052-01 | 3/2 Design control — primary reference U.S. Government activity |
| S3C10036-01 | 3/2 Design control — primary reference U.S. Government activity |
| V3D10339 ITEM 17 | 5/2 Secondary reference U.S. Government activity |
| V3D10338 ITEM 17 | 5/2 Secondary reference U.S. Government activity |
| V3D10339-17 | 5/2 Secondary reference U.S. Government activity |
| V3D10338-17 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-256-8418 is a Quiet Vent Assembly, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-256-8418: End Item Identification: 8 VL MANIFOLD. 0 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.