The Regulator Assembly, cataloged under National Stock Number 4220-01-237-1607, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Regulator Assembly |
| FSC / FSG | 4220 — Marine Lifesaving and Diving Equipment (FSG 42) |
| Manufacturers | Kirby Morgan Dive Systems Inc (CAGE 58366) |
| Parameter | Value |
|---|---|
| NSN | 4220-01-237-1607 |
| Primary Part Number | 505-027 |
| Item Name | Regulator Assembly |
| 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) |
| Part Number | Manufacturer |
|---|---|
| 505-027 PRIMARY | Kirby Morgan Dive Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 17-131B | 5/9 Secondary reference Kirby Morgan Dive Systems Inc |
NSN 4220-01-237-1607 is a Regulator Assembly, manufactured by Kirby Morgan Dive Systems Inc, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-237-1607 has 1 manufacturer part number on file: 505-027 (Kirby Morgan Dive Systems Inc).
1 possible match (shared part number, not a government interchangeability claim): 5977-01-363-9801. Verify interchangeability with system specifications before substitution.
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.