The Chamber,spring,valve, cataloged under National Stock Number 4820-01-290-4988, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Chamber,spring,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-290-4988 |
| Item Name | Chamber,spring,valve |
| 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 |
|---|---|
| B-34834-01 | 3/9 Design control — primary reference General Regulator Corp. Dba Accudriv |
| E-32028-01 ITEM 9 | 5/9 Secondary reference General Regulator Corp. Dba Accudriv |
| E-32028 ITEM 9 | 5/9 Secondary reference General Regulator Corp. Dba Accudriv |
| E-32028-01 | D/9 Drawing number reference only General Regulator Corp. Dba Accudriv |
NSN 4820-01-290-4988 is a Chamber,spring,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.
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.