The Valve,safety Relief, cataloged under National Stock Number 4820-01-420-3291, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Bauer Compressors, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-420-3291 |
| Primary Part Number | 055257 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Bauer Compressors, Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| 055257 PRIMARY | Bauer Compressors, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 055257-340 | 5/9 Secondary reference Air Dry Co of America, Llc |
| 055257-340 | 5/9 Secondary reference Bauer Compressors, Inc. |
| 055257-340 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-420-3291 is a Valve,safety Relief, manufactured by Bauer Compressors, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-420-3291 has 1 manufacturer part number on file: 055257 (Bauer Compressors, Inc.).
Key specifications for 055257: Special Features: 1ST STAGE; End Item Identification: BAUER COMPRESSORS INC K15-350 AIR COMPRESSOR. 0 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.