The Disk,valve, cataloged under National Stock Number 4820-01-666-6540, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Northern Lights Inc. Government technical data includes 2 specifications, 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 | 4820-01-666-6540 |
| Primary Part Number | 32A0421100 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Northern Lights Inc |
| Status | ACTIVE |
| Style Designator | POPPET |
| Media for Which Designed | GAS |
| 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 |
|---|---|
| 32A0421100 PRIMARY | Northern Lights Inc (USA) |
NSN 4820-01-666-6540 is a Disk,valve, manufactured by Northern Lights Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-666-6540 has 1 manufacturer part number on file: 32A0421100 (Northern Lights Inc).
Key specifications for 32A0421100: Style Designator: POPPET; Media for Which Designed: GAS; Part Name Assigned by Controlling Agency: EXHAUST VALVE. 2 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.