The Valve,safety Relief, cataloged under National Stock Number 4820-01-679-6288, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-679-6288 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.375 INCHES SECOND END IN |
| Style Designator | SCREW-IN CARTRIDGE |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 0.500 INCHES IN |
| Bonnet Type | INSIDE SPRING |
| Maximum Operating Temp | 400.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nominal Outside Diameter | 1.400 INCHES FIRST END IN |
| Material | STEEL COMP 316 BODY |
| Material | STEEL COMP 316 STEM |
| Material | STEEL COMP 316 FLOW CONTROL DEVICE |
| Material | RUBBER SYNTHETIC O-RING |
| 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 |
| Reference | Meaning |
|---|---|
| VRV-375SS-V-.5 | 3/9 Design control — primary reference U.S. Government activity |
| 08000526 NO 37 | 5/2 Secondary reference U.S. Government activity |
| 57001579 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-679-6288 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-679-6288: Nominal Pipe Size Accommodated: 0.375 INCHES SECOND END IN; Style Designator: SCREW-IN CARTRIDGE; Operating Pressure: 150.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM SINGLE RESPONSE LBS; Valve Size: 0.500 INCHES IN. 12 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.