The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-459-6633, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Danfoss Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-459-6633 |
| Primary Part Number | 157B1125 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Danfoss Inc |
| Status | ACTIVE |
| Flow Control Device | ANY ACCEPTABLE |
| Temp Rating | -50.0 CELSIUS DEGC |
| Second End Relationship with First End | IDENTICAL |
| Body Style | MULTIPLE CIONNECTION |
| First End Style Designator | BEVELED |
| End Connection Quantity | 2 |
| Temp Control Device Type | FUSIBLE |
| First End Connection Type | UNTHREADED EXTERNAL TUBE |
| Temp Adjustability | NOT ADJUSTABLE |
| First End Outside Diameter Tube Accommodated | 0.750 INCHES NOMINAL IN |
| Material | STEEL BODY |
| Valve Discharge Flow Rate | 300.0 POUNDS PER HOUR LBS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 157B1125 PRIMARY | Danfoss Inc (USA) |
| Reference | Meaning |
|---|---|
| 157B1125 | 5/9 Secondary reference Danfoss Fluid Power Inc Racine Opn |
NSN 4820-01-459-6633 is a Valve,relief,pressure and Temper, manufactured by Danfoss Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-459-6633 has 1 manufacturer part number on file: 157B1125 (Danfoss Inc).
Key specifications for 157B1125: Flow Control Device: ANY ACCEPTABLE; Temp Rating: -50.0 CELSIUS DEGC; Second End Relationship with First End: IDENTICAL; Body Style: MULTIPLE CIONNECTION. 12 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.