The Valve,vent, cataloged under National Stock Number 4820-01-237-8281, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is American Turbo Systems Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,vent |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | American Turbo Systems Inc (CAGE 0WE82) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-237-8281 |
| Primary Part Number | 83-14079 |
| Item Name | Valve,vent |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | American Turbo Systems Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 83-14079 | American Turbo Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 83-14079 | 3/9 Design control — primary reference Walker Power Systems, Inc. Dba Tiernay Turbines |
NSN 4820-01-237-8281 is a Valve,vent, manufactured by American Turbo Systems Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-237-8281 has 1 manufacturer part number on file: 83-14079 (American Turbo Systems Inc).
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.