The Disk,valve, cataloged under National Stock Number 4820-01-421-1678, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Kf Industries Dba Contromatics. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-421-1678 |
| Primary Part Number | 12303-2221 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Kf Industries Dba Contromatics |
| Status | ACTIVE |
| Style Designator | SWING CHECK |
| Material | NICKEL ALLOY |
| 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 |
|---|---|
| 7092-1179P41912 INDEX 02 | Kf Industries Dba Contromatics (USA) |
| 12303-2221 PRIMARY | Kf Industries Dba Contromatics (USA) |
NSN 4820-01-421-1678 is a Disk,valve, manufactured by Kf Industries Dba Contromatics, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-421-1678 has 2 manufacturer part numbers on file: 7092-1179P41912 INDEX 02 (Kf Industries Dba Contromatics), 12303-2221 (Kf Industries Dba Contromatics).
Key specifications for 12303-2221: Style Designator: SWING CHECK; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Material: NICKEL ALLOY. 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.