The Valve,safety Relief, cataloged under National Stock Number 4820-01-291-1379, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Atlas Copco Holyoke Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-291-1379 |
| Primary Part Number | VAL-2145 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Atlas Copco Holyoke Inc |
| Status | ACTIVE |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| VAL-2145 PRIMARY | Atlas Copco Holyoke Inc (USA) |
| Reference | Meaning |
|---|---|
| VAL-947 | 5/9 Secondary reference Atlas Copco Holyoke Inc |
NSN 4820-01-291-1379 is a Valve,safety Relief, manufactured by Atlas Copco Holyoke Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-291-1379 has 1 manufacturer part number on file: VAL-2145 (Atlas Copco Holyoke Inc).
Key specifications for VAL-2145: Valve Operation Method: AUTOMATIC. 1 specification is 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.