The Valve,safety Relief, cataloged under National Stock Number 4820-01-398-2080, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-398-2080 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Style Designator | ANGLE |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 150.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | BRONZE BODY |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Material | NICKEL ALLOY SEAT |
| 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 |
| Reference | Meaning |
|---|---|
| D48664-14 | C/1 Advisory reference — outside the item-of-supply concept Hunt Valve Company, Inc. |
| D48664-14 | 5/9 Secondary reference Hunt Valve Company Inc Dba Union Flonetics |
| D48664-14-BM1 | C/1 Advisory reference — outside the item-of-supply concept Hunt Valve Company, Inc. |
| D48664-14-BM1 | 5/9 Secondary reference Hunt Valve Company Inc Dba Union Flonetics |
| D48664 ASSEMBLY D48664-14 | C/1 Advisory reference — outside the item-of-supply concept Hunt Valve Company, Inc. |
| D48664 ASSEMBLY D48664-14 | 3/9 Design control — primary reference Hunt Valve Company Inc Dba Union Flonetics |
| D48664 | D/9 Drawing number reference only Hunt Valve Company Inc Dba Union Flonetics |
NSN 4820-01-398-2080 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-398-2080: Flow Control Device: DISK; Style Designator: ANGLE; Operating Pressure: 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 150.0 FAHRENHEIT SINGLE RESPONSE DEGF. 9 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.