The Valve,air,protection, cataloged under National Stock Number 4820-01-164-3285, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is General Dynamics Land Systems Canadacorp. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-164-3285 |
| Primary Part Number | 10512053 |
| Item Name | Valve,air,protection |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | General Dynamics Land Systems Canadacorp |
| Status | ACTIVE |
| General Characteristics Item Description | CAST ZINC; UNPAINTED; CLOSING PRESSURE SET A 80 PSI PLUS OR MINUS 5 PSI |
| 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 |
|---|---|
| 111258 | Brake Systems, Inc. (USA) |
| 10512053 PRIMARY | General Dynamics Land Systems Canadacorp (CAN) |
| Reference | Meaning |
|---|---|
| 111258 | 5/9 Secondary reference Williams Controls Inc |
| 10501394 | 5/9 Secondary reference General Dynamics Land Systems Canadacorp |
NSN 4820-01-164-3285 is a Valve,air,protection, manufactured by General Dynamics Land Systems Canadacorp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-164-3285 has 2 manufacturer part numbers on file: 111258 (Brake Systems, Inc.), 10512053 (General Dynamics Land Systems Canadacorp).
Key specifications for 10512053: General Characteristics Item Description: CAST ZINC; UNPAINTED; CLOSING PRESSURE SET A 80 PSI PLUS OR MINUS 5 PSI. 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.