The Valve,butterfly, cataloged under National Stock Number 4820-01-171-0441, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Smr Acquisition Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | The Boeing Company (CAGE 8V613); Smr Acquisition Llc (CAGE 0ACH0) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-171-0441 |
| Primary Part Number | 2415-01 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Smr Acquisition Llc |
| 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 |
|---|---|
| 7-311A21250-3 | The Boeing Company (USA) |
| 2415-01 PRIMARY | Smr Acquisition Llc (USA) |
| Reference | Meaning |
|---|---|
| 7-311A21250-3 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| 2415-01 | 3/9 Design control — primary reference Aerospace Lighting Corporation |
| 2415-01 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-171-0441 is a Valve,butterfly, manufactured by Smr Acquisition Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-171-0441 has 2 manufacturer part numbers on file: 7-311A21250-3 (The Boeing Company), 2415-01 (Smr Acquisition Llc).
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.