The Valve,butterfly, cataloged under National Stock Number 4820-01-178-8441, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Betts Industries, Inc.. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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,butterfly |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Betts Industries, Inc. (CAGE 13226); Isometrics Inc (CAGE 55242) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-178-8441 |
| Primary Part Number | WD201ALB004 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Betts Industries, 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 |
|---|---|
| WD201ALB004 PRIMARY | Betts Industries, Inc. (USA) |
| 48C-61 PRIMARY | Isometrics Inc (USA) |
| Reference | Meaning |
|---|---|
| WD-201-ALB W/O HANDLE | 5/9 Secondary reference Betts Industries, Inc. |
NSN 4820-01-178-8441 is a Valve,butterfly, manufactured by Betts Industries, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-178-8441 has 2 manufacturer part numbers on file: WD201ALB004 (Betts Industries, Inc.), 48C-61 (Isometrics 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.