The Body,valve,breathing Apparatus, cataloged under National Stock Number 4220-01-331-1739, 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 Kirby Morgan Dive Systems Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4220-01-331-1739 |
| Primary Part Number | 545-080 |
| Item Name | Body,valve,breathing Apparatus |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Kirby Morgan Dive Systems Inc |
| 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 |
|---|---|
| DE2731 | Jfd Australia Pty Ltd James Fisher Australia Pty Ltd (AUS) |
| 545-080 PRIMARY | Kirby Morgan Dive Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 4220PL2079522 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 545-045 | 5/9 Secondary reference Kirby Morgan Dive Systems Inc |
| 592-6318261 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4220-01-331-1739 is a Body,valve,breathing Apparatus, manufactured by Kirby Morgan Dive Systems Inc, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-331-1739 has 2 manufacturer part numbers on file: DE2731 (Jfd Australia Pty Ltd James Fisher Australia Pty Ltd), 545-080 (Kirby Morgan Dive Systems Inc).
Key specifications for 545-080: End Item Identification: MK21 MOD1 DIVING HELMET. 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.