The Valve,breathing Apparatus, cataloged under National Stock Number 4220-01-414-9355, is classified within Federal Supply Class 4220 (Marine Lifesaving and Diving Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4220-01-414-9355 |
| Primary Part Number | 211074923 |
| Item Name | Valve,breathing Apparatus |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| 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 |
|---|---|
| 512-6405698-AY99 | Naval Sea Systems Command (USA) |
| 211074923 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 6405698 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4220-01-414-9355 is a Valve,breathing Apparatus, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-414-9355 has 2 manufacturer part numbers on file: 512-6405698-AY99 (Naval Sea Systems Command), 211074923 (Huntington Ingalls Inc Div Newport News Shipbuilding).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-416-1625. Verify interchangeability with system specifications before substitution.
Key specifications for 211074923: End Item Identification: SEAWOLF CLASS SUBMARINE. 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.