The Valve,safety Relief, cataloged under National Stock Number 4820-01-490-5997, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sauer Compressors Usa, Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-490-5997 |
| Primary Part Number | 065643 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Sauer Compressors Usa, Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| 085174 ITEM 48 | Sauer Compressors Usa, Inc. (USA) |
| 065643 PRIMARY | Sauer Compressors Usa, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 062089 | 5/9 Secondary reference Sauer Compressors Usa, Inc. |
| 085174 | D/9 Drawing number reference only Sauer Compressors Usa, Inc. |
NSN 4820-01-490-5997 is a Valve,safety Relief, manufactured by Sauer Compressors Usa, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-490-5997 has 2 manufacturer part numbers on file: 085174 ITEM 48 (Sauer Compressors Usa, Inc.), 065643 (Sauer Compressors Usa, Inc.).
Key specifications for 065643: End Item Identification: E/I:SAFETY RELIEF VALVE IMD. NHA:COMPRESSOR UNIT WP5000.; Valve Operation Method: AUTOMATIC. 1 specification is 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.