The Valve,safety Relief, cataloged under National Stock Number 4820-00-722-3076, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-722-3076 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | CONE |
| Flange Shape | RECTANGULAR WITH HOLES THIRD END |
| Flange Face Design | PLAIN THIRD END |
| Connection Style | PLAIN,OPTIONAL END(PIPE) FIRST END |
| Nominal Length | 2.250 INCHES THIRD END IN |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Connection Type | FLANGE THIRD END |
| Style Designator | ANGLE |
| Bolt Hole Nominal Diameter | 0.375 INCHES THIRD END IN |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 1.500 INCHES THIRD END IN |
| Disk Loading Method | SPRING |
| Bolt Hole Quantity | 4 THIRD END |
| Nominal Width | 2.250 INCHES FOURTH END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 1.500 INCHES THIRD END IN |
| Material | STEEL OVERALL |
| Thread Series Designator | NPT FIRST END |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.500 INCHES THIRD END 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 |
|---|---|
| BT3-175-3XX12W20 | 5/9 Secondary reference Vickers Inc |
| BT06-3M17A2 | 3/9 Design control — primary reference Vickers Inc |
| BT3-175-3XX12W2000PSI | 5/9 Secondary reference Vickers Inc |
| 980642 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-722-3076 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-722-3076: Flow Control Device: CONE; Flange Shape: RECTANGULAR WITH HOLES THIRD END; Flange Face Design: PLAIN THIRD END; Connection Style: PLAIN,OPTIONAL END(PIPE) FIRST END. 20 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.