The Disk,valve, cataloged under National Stock Number 4820-00-021-2854, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-021-2854 |
| Primary Part Number | A2843-001-128 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | ACTIVE |
| 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 |
|---|---|
| 8267 PIECE 4 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 8266 FIND 4 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 8270 FIND 4 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| A2843-001-128 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 8277 PIECE 3 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| A2843-001-128 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 8267 PIECE 4 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 8270 FIND 4 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 8277 PIECE 3 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 8266 FIND 4 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-00-021-2854 is a Disk,valve, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-021-2854 has 5 manufacturer part numbers on file: 8267 PIECE 4 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 8266 FIND 4 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 8270 FIND 4 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), A2843-001-128 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 8277 PIECE 3 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
Key specifications for A2843-001-128: Material: NICKEL ALLOY. 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.