The Valve,butterfly, cataloged under National Stock Number 4820-01-577-4381, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is W. & O. Supply, Inc. Div Mobile. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-577-4381 |
| Primary Part Number | WO-03-BFV-SS/EMI-ASSY |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | W. & O. Supply, Inc. Div Mobile |
| 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 |
|---|---|
| 1LA291 | W. & O. Supply, Inc. Div Mobile (USA) |
| WO-03-BFV-SS/EMI-ASSY PRIMARY | W. & O. Supply, Inc. Div Mobile (USA) |
NSN 4820-01-577-4381 is a Valve,butterfly, manufactured by W. & O. Supply, Inc. Div Mobile, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-577-4381 has 2 manufacturer part numbers on file: 1LA291 (W. & O. Supply, Inc. Div Mobile), WO-03-BFV-SS/EMI-ASSY (W. & O. Supply, Inc. Div Mobile).
Key specifications for WO-03-BFV-SS/EMI-ASSY: Part Name Assigned by Controlling Agency: BUTTERFLY VALVE WITH ACTUATOR; End Item Identification: VALVE/ACTUATOR ASSEMBLY. 0 specifications are 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.