The Valve,safety Relief, cataloged under National Stock Number 4820-01-396-1499, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Nortrax-Great Lakes, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-396-1499 |
| Primary Part Number | AT79591 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Nortrax-Great Lakes, 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 |
|---|---|
| AT79591 PRIMARY | Nortrax-Great Lakes, Inc. (USA) |
| AT79591 PRIMARY | Deere & Company Dba Deere John Co (USA) |
| Reference | Meaning |
|---|---|
| 8407-013 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| AT79591 | 5/9 Secondary reference Deere & Co |
NSN 4820-01-396-1499 is a Valve,safety Relief, manufactured by Nortrax-Great Lakes, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-396-1499 has 2 manufacturer part numbers on file: AT79591 (Nortrax-Great Lakes, Inc.), AT79591 (Deere & Company Dba Deere John Co).
Key specifications for AT79591: End Item Identification: EXCAVATOR; 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.