The Gear Operator,valve, cataloged under National Stock Number 4820-01-139-1779, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Automatic Switch Company Dba Asco. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Gear Operator,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Automatic Switch Company Dba Asco (CAGE 04845) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-139-1779 |
| Primary Part Number | 218-186-2 |
| Item Name | Gear Operator,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Automatic Switch Company Dba Asco |
| 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 |
|---|---|
| 218-186-2 PRIMARY | Automatic Switch Company Dba Asco (USA) |
| AV220-513 ITEM 18 | Automatic Switch Company Dba Asco (USA) |
NSN 4820-01-139-1779 is a Gear Operator,valve, manufactured by Automatic Switch Company Dba Asco, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-139-1779 has 2 manufacturer part numbers on file: 218-186-2 (Automatic Switch Company Dba Asco), AV220-513 ITEM 18 (Automatic Switch Company Dba Asco).
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.