The Valve Vacuum Poppet, cataloged under National Stock Number 4820-01-554-6331, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-554-6331 |
| Item Name | Valve Vacuum Poppet |
| 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 |
|---|---|
| 118623 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-554-6331 is a Valve Vacuum Poppet, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-554-6331: Special Features: NEXT HIGHER ASSEMBLY PART NUMBER:118600, AIR PRESSURE REGULATOR FOR HYDRAULIC OIL RESERVOIR. 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.