The Seat,valve, cataloged under National Stock Number 4820-01-021-4486, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Seat,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-021-4486 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2641-402-01PIEC | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 2641-402-01PC73 | 5/9 Secondary reference U.S. Government activity |
| EBCN56-97-0602 | 5/9 Secondary reference U.S. Government activity |
| 56-97-0602A | 3/2 Design control — primary reference U.S. Government activity |
| 56-97-0602 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-021-4486 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
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 4820-01-021-4486 has DEMIL Code Q. 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.