The Stem,fluid Valve, cataloged under National Stock Number 4820-01-256-9099, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-256-9099 |
| Primary Part Number | 6552-182 DET22-A PC 3 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Largest Outside Diameter | 0.875 INCHES NOMINAL IN |
| Material | COPPER ALLOY 861 |
| 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 |
|---|---|
| 6552-182 DET22-A PC 3 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 208-4455755 DET22-A PC 3 | 5/2 Secondary reference U.S. Government activity |
| 6552-182 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
| 208-4455755 | D/9 Drawing number reference only U.S. Government activity |
| QQ-C-390 ALY-C- | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4820-01-256-9099 is a Stem,fluid Valve, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-256-9099 has 1 manufacturer part number on file: 6552-182 DET22-A PC 3 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 6552-182 DET22-A PC 3: Largest Outside Diameter: 0.875 INCHES NOMINAL IN; Material: COPPER ALLOY 861. 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.