The Valve,safety Relief, cataloged under National Stock Number 4820-01-439-3879, 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Supply Class 4820 (Valves, Nonpowered) of the Valves group. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 4820-01-439-3879 |
| Item Name | Valve,safety Relief |
| 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 |
|---|---|
| 21278-60 | 5/9 Secondary reference Bosch Automotive Service Solutions Inc. |
| 2-30616 | D/9 Drawing number reference only Calgon Carbon Uv Technologies Llc Dba Hyde Marine |
| 2-30616 ITEM 4 | 5/9 Secondary reference Calgon Carbon Uv Technologies Llc Dba Hyde Marine |
| 21278-60 | 3/9 Design control — primary reference Field Power Corp Otc Div |
| RV21278-60 | C/1 Advisory reference — outside the item-of-supply concept Field Power Corp Otc Div |
NSN 4820-01-439-3879 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-439-3879: End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS. 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.