The Valve,safety Relief, cataloged under National Stock Number 4820-01-047-3775, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-047-3775 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Connection Style | GASKET SEAL(BOSS) ALL ENDS |
| Connection Type | THREADED INTERNAL BOSS ALL ENDS |
| Style Designator | ANGLE |
| Operating Pressure | 200.0 KILOGRAMS PER SQUARE CENTIMETER MAXIMUM SINGLE RESPONSE KG |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Maximum Operating Temp | 160.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Mounting Facility | BRACKET(S) |
| Thread Class | 3B ALL ENDS |
| Material | ALUMINUM OVERALL |
| Thread Series Designator | UNF ALL ENDS |
| Opening Pressure Setting | 150.0 POUNDS PER SQUARE INCH LBS |
| Valve Discharge Flow Rate | 6.0 GALLONS PER MINUTE |
| 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 |
|---|---|
| 835280 | 5/9 Secondary reference Parker-Hannifin Corporation Div Hydraulic Accumulator Division |
| 835280-200 | 5/9 Secondary reference Parker-Hannifin Corporation Div Hydraulic Accumulator Division |
| 76912-61 | 3/9 Design control — primary reference U.S. Government activity |
| 76912-6 | 5/9 Secondary reference U.S. Government activity |
| 636AS184-1 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 4820-01-047-3775 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-047-3775: Connection Style: GASKET SEAL(BOSS) ALL ENDS; Connection Type: THREADED INTERNAL BOSS ALL ENDS; Style Designator: ANGLE; Operating Pressure: 200.0 KILOGRAMS PER SQUARE CENTIMETER MAXIMUM SINGLE RESPONSE KG. 14 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.