The Valve,safety Relief, cataloged under National Stock Number 4820-01-371-7670, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-371-7670 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Type | UNTHREADED CARTRIDGE ALL ENDS |
| Style Designator | DROP-IN CARTRIDGE |
| Material | STEEL CORROSION RESISTING BODY |
| Opening Pressure Setting | 6000.0 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| D-WK-764-6 ITEM 41 | 3/2 Design control — primary reference U.S. Government activity |
| RPEC-LAN-FBP | 5/9 Secondary reference Lha Products Inc Sub of Lucas Industries of North America |
| D-WK-764-6 ITEM 41 | 3/9 Design control — primary reference Walz and Krenzer Inc |
NSN 4820-01-371-7670 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-371-7670: Flow Control Device: DISK; Connection Type: UNTHREADED CARTRIDGE ALL ENDS; Style Designator: DROP-IN CARTRIDGE; Material: STEEL CORROSION RESISTING BODY. 6 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.