The Stem,fluid Valve, cataloged under National Stock Number 4820-01-221-2122, 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 3 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-221-2122 |
| Primary Part Number | NMP320 PIECE 12 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | ACTIVE |
| Largest Outside Diameter | 1.062 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-B53 MIL SPEC ALL MATERIAL RESPONSES |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| NMP320 PIECE 12 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| NMP320 PIECE 12 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| NMP320 PIECE 12 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| 3,129,404 PIECE 12 | 5/2 Secondary reference U.S. Government activity |
| NMP320 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| 3,129,404 | D/9 Drawing number reference only U.S. Government activity |
| NMP320 | D/9 Drawing number reference only Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-01-221-2122 is a Stem,fluid Valve, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-221-2122 has 1 manufacturer part number on file: NMP320 PIECE 12 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
Key specifications for NMP320 PIECE 12: Largest Outside Diameter: 1.062 INCHES NOMINAL IN; Material Document and Classification: MIL-S-B53 MIL SPEC ALL MATERIAL RESPONSES; Overall Length: 16.938 INCHES NOMINAL IN; Special Features: THREADED 7.125 IN. FROM THE TOP END 0.750-18 THD; TOP END 0.438 IN. DIA; OTHER END 0.906 IN. DIA; ROUND ON THE END AND A 0.125 IN. HOLE 0.688 IN. FROM END IN. 3 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.