The Regulator,breathing Gas Pressure, cataloged under National Stock Number 4220-01-561-7789, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4220-01-561-7789 |
| Primary Part Number | 505-028 |
| Item Name | Regulator,breathing Gas Pressure |
| 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 |
|---|---|
| 505-028 PRIMARY | Kirby Morgan Dive Systems Inc (USA) |
NSN 4220-01-561-7789 is a Regulator,breathing Gas Pressure, manufactured by Kirby Morgan Dive Systems Inc, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-561-7789 has 1 manufacturer part number on file: 505-028 (Kirby Morgan Dive Systems Inc).
Key specifications for 505-028: Part Name Assigned by Controlling Agency: REG. ADJUSTMENT KNOB ASSY; End Item Identification: NSN4220-01-448-6434. 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.