The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-876-9872, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Triumph Thermal Systems - Maryland, Inc.. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-876-9872 |
| Primary Part Number | 57-761-04 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Triumph Thermal Systems - Maryland, Inc. |
| Status | ACTIVE |
| Flow Control Device | DISK, FLAT, TOP AND BOTTOM GUIDED |
| Renewable Seat Ring Type | PRESSED-IN |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | TEE W/OFFSET |
| Regulation Type | MANUAL SINGLE STAGE |
| First End Thread Class | 3B |
| Third End Relationship with Preceding Ends | NOT IDENTICAL WITH FIRST OR SECOND END |
| First End Style Designator | GASKET SEAL |
| Temp Rating | -65.0 FAHRENHEIT MINIMUM AND 160.0 FAHRENHEIT MAXIMUM DEGF |
| End Connection Quantity | 3 |
| Manual Control Method | LEVER |
| Valve Loading Method | SPRING |
| Third End Thread Direction | RIGHT-HAND |
| First End Connection Type | THREADED INTERNAL BOSS |
| Third End Thread Class | 3B |
| Surface Treatment | ANODIZE OUTSIDE |
| Third End Connection Type | THREADED INTERNAL BOSS |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING SEAT |
| Material | RUBBER PACKING |
| Material | STEEL CORROSION RESISTING STEM |
| Media for Which Designed | AIR |
| Maximum Inlet Pressure Rating | ERR-060 |
| Third End Style Designator | GASKET SEAL |
| Furnished Items | AUTOMATIC RELIEF VALVE |
| Thread Size and Series/type Designator | 3/4-16 UNF FIRST END |
| Thread Size and Series/type Designator | 7/16-20 UNF THIRD END |
| Outlet Pressure Setting | ERR-060 |
| Filter | INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 57-761-04 PRIMARY | Triumph Thermal Systems - Maryland, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 658065-53 | 3/2 Design control — primary reference U.S. Government activity |
| 638065-53 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-876-9872 is a Valve,regulating,fluid Pressure, manufactured by Triumph Thermal Systems - Maryland, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-876-9872 has 1 manufacturer part number on file: 57-761-04 (Triumph Thermal Systems - Maryland, Inc.).
Key specifications for 57-761-04: Flow Control Device: DISK, FLAT, TOP AND BOTTOM GUIDED; Renewable Seat Ring Type: PRESSED-IN; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL. 30 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.