The Valve,safety Relief, cataloged under National Stock Number 4820-01-239-5146, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Terex Reedrill Dba Reedrill Texoma Div Terex Mining. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-239-5146 |
| Primary Part Number | 1050094 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Terex Reedrill Dba Reedrill Texoma Div Terex Mining |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Style Designator | ANGLE |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Material | STEEL CORROSION RESISTING BODY |
| Material | STEEL CORROSION RESISTING STEM |
| 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 |
|---|---|
| 1050094 PRIMARY | Terex Reedrill Dba Reedrill Texoma Div Terex Mining (USA) |
| Reference | Meaning |
|---|---|
| 1050094 | 5/9 Secondary reference Gardner-Denver Mining and Constructin Div of Cooper Industries Inc |
NSN 4820-01-239-5146 is a Valve,safety Relief, manufactured by Terex Reedrill Dba Reedrill Texoma Div Terex Mining, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-239-5146 has 1 manufacturer part number on file: 1050094 (Terex Reedrill Dba Reedrill Texoma Div Terex Mining).
2 possible matches (shared part number, not a government interchangeability claim): 5340-01-540-3119, 4820-01-613-9456. Verify interchangeability with system specifications before substitution.
Key specifications for 1050094: Flow Control Device: POPPET; Style Designator: ANGLE; Operating Pressure: 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Media for Which Designed: AIR SINGLE RESPONSE. 7 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.