The Valve Actuator Assy, cataloged under National Stock Number 4820-01-577-4391, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is W & O Supply Inc. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Valve Actuator Assy |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | W & O Supply Inc (CAGE 1QP40); W. & O. Supply, Inc. Div Mobile (CAGE 4YUS3) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-577-4391 |
| Primary Part Number | WO-05BFV-LA/BZ-ASSY |
| Item Name | Valve Actuator Assy |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | W & O Supply Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| WO-05BFV-LA/BZ-ASSY PRIMARY | W & O Supply Inc (USA) |
| LUBFV-A ASSY REV B | W. & O. Supply, Inc. Div Mobile (USA) |
| WO-05BFV-LA/BZ-ASSY PRIMARY | W. & O. Supply, Inc. Div Mobile (USA) |
NSN 4820-01-577-4391 is a Valve Actuator Assy, manufactured by W & O Supply Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-577-4391 has 3 manufacturer part numbers on file: WO-05BFV-LA/BZ-ASSY (W & O Supply Inc), LUBFV-A ASSY REV B (W. & O. Supply, Inc. Div Mobile), WO-05BFV-LA/BZ-ASSY (W. & O. Supply, Inc. Div Mobile).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 4820-01-577-4391 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.