The Valve,safety Relief, cataloged under National Stock Number 4820-01-142-4306, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-142-4306 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 275.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Media for Which Designed | HYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE |
| Material | STEEL COMP 303 BODY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 10162992 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| PRFX0503050A | 3/2 Design control — primary reference U.S. Government activity |
| PRFX0503050AD | 5/2 Secondary reference U.S. Government activity |
| PRFX050305AA | 5/9 Secondary reference U.S. Government activity |
| 287806-3 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 4820-01-142-4306 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-142-4306: Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 275.0 FAHRENHEIT SINGLE RESPONSE DEGF; Media for Which Designed: HYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE; Material: STEEL COMP 303 BODY. 4 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.
NSN 4820-01-142-4306 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.