The Valve,butterfly, cataloged under National Stock Number 4820-01-686-4501, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tyco Fire Products Lp. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-686-4501 |
| Primary Part Number | 59-801-1-020N |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Tyco Fire Products Lp |
| Status | ACTIVE |
| Valve Size | 2.0 INCHES IN |
| 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 |
|---|---|
| 59-801-1-020N PRIMARY | Tyco Fire Products Lp (USA) |
NSN 4820-01-686-4501 is a Valve,butterfly, manufactured by Tyco Fire Products Lp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-686-4501 has 1 manufacturer part number on file: 59-801-1-020N (Tyco Fire Products Lp).
Key specifications for 59-801-1-020N: Valve Size: 2.0 INCHES IN; Special Features: WITH INTERNAL SUPERVISORY SWITCH; Part Name Assigned by Controlling Agency: WAFER STYLE BUTTERFLY VALVE. 1 specification is 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.