The Valve,safety Relief, cataloged under National Stock Number 4820-01-286-3165, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Eaton Hydraulics Asc. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-286-3165 |
| Primary Part Number | 894171 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Eaton Hydraulics Asc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Material | STEEL BODY |
| Opening Pressure Setting | 4500.0 POUNDS PER SQUARE INCH LBS |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 894171 PRIMARY | Eaton Hydraulics Asc (USA) |
| Reference | Meaning |
|---|---|
| 894171-45 | 5/9 Secondary reference Eaton Aerospace, Llc Dba Jackson South |
| 894171-45 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-286-3165 is a Valve,safety Relief, manufactured by Eaton Hydraulics Asc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-286-3165 has 1 manufacturer part number on file: 894171 (Eaton Hydraulics Asc).
Key specifications for 894171: Flow Control Device: DISK; Material: STEEL BODY; Opening Pressure Setting: 4500.0 POUNDS PER SQUARE INCH LBS; Valve Operation Method: AUTOMATIC. 4 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.