The Valve,safety Relief, cataloged under National Stock Number 4820-01-382-8859, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Everllence Usa Inc.. Government technical data includes 3 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-382-8859 |
| Primary Part Number | 92MZ146 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Everllence Usa Inc. |
| Status | ACTIVE |
| Operating Pressure | 4.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| 92MZ146 PRIMARY | Everllence Usa Inc. (USA) |
| Reference | Meaning |
|---|---|
| OD19573 | C/1 Advisory reference — outside the item-of-supply concept Everllence Usa Inc. |
| 0D19573 | 5/9 Secondary reference Man Diesel & Turbo Ltd |
NSN 4820-01-382-8859 is a Valve,safety Relief, manufactured by Everllence Usa Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-382-8859 has 1 manufacturer part number on file: 92MZ146 (Everllence Usa Inc.).
1 possible match (shared part number, not a government interchangeability claim): 2930-01-384-1162. Verify interchangeability with system specifications before substitution.
Key specifications for 92MZ146: Operating Pressure: 4.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Material: COPPER ALLOY OVERALL; Valve Operation Method: AUTOMATIC. 3 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.