The Valve,check, cataloged under National Stock Number 4820-01-421-2333, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dynamic Air Engineering, Inc.. 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 | 4820-01-421-2333 |
| Primary Part Number | K680-9 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dynamic Air Engineering, Inc. |
| 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 |
|---|---|
| K680-9 PRIMARY | Dynamic Air Engineering, Inc. (USA) |
NSN 4820-01-421-2333 is a Valve,check, manufactured by Dynamic Air Engineering, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-421-2333 has 1 manufacturer part number on file: K680-9 (Dynamic Air Engineering, Inc.).
Key specifications for K680-9: End Item Identification: FAN MODEL M7921M-1A A. 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.