The Valve,safety Relief, cataloged under National Stock Number 4820-01-465-8309, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-465-8309 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Bolt Hole Nominal Diameter | 6.0 MILLIMETERS ALL ENDS MM |
| Operating Pressure | 15.500 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Nominal Thread Size | 0.138 INCHES ALL ENDS IN |
| Maximum Operating Temp | -54.0 CELSIUS FIRST RESPONSE DEGC |
| Maximum Operating Temp | 55.0 CELSIUS SECOND RESPONSE DEGC |
| Nominal Outside Diameter | 3.000 INCHES ALL ENDS IN |
| Mounting Facility | THREADED FASTENER |
| Bolt Hole Quantity | 8 ALL ENDS |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Thread Class | 2B ALL ENDS |
| Test Data Document | 97942-589R006 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Thread Quantity Per Inch | 32 ALL ENDS |
| Material | ALUMINUM BODY |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) THIRD END |
| Raised Face Nominal Diameter | 2.500 INCHES ALL ENDS IN |
| Raised Face Nominal Height | 1.250 INCHES ALL ENDS IN |
| Nominal Thickness | 1.250 INCHES ALL ENDS IN |
| 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 |
|---|---|
| 589R006H01 | 3/2 Design control — primary reference U.S. Government activity |
| 589R006 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-465-8309 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-465-8309: Bolt Hole Nominal Diameter: 6.0 MILLIMETERS ALL ENDS MM; Operating Pressure: 15.500 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS; Nominal Thread Size: 0.138 INCHES ALL ENDS IN; Maximum Operating Temp: -54.0 CELSIUS FIRST RESPONSE DEGC. 17 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.