The Body,valve,breathing Apparatus, cataloged under National Stock Number 4220-01-331-1741, is classified within Federal Supply Class 4220 (No Item Name Available) of the Fire Fighting, Rescue, and Safety Equipment group. The primary manufacturer of record is Kirby Morgan Dive Systems Inc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4220-01-331-1741 |
| Primary Part Number | 550-225 |
| Item Name | Body,valve,breathing Apparatus |
| FSC / FSG | 4220 / 42 — No Item Name Available |
| Manufacturer | Kirby Morgan Dive Systems Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 550-225 PRIMARY | Kirby Morgan Dive Systems Inc (USA) |
| 592-6318215 | Naval Sea Systems Command (USA) |
NSN 4220-01-331-1741 is a Body,valve,breathing Apparatus, manufactured by Kirby Morgan Dive Systems Inc, classified under FSC 4220 (No Item Name Available). Status: active.
NSN 4220-01-331-1741 has 2 cross-referenced part numbers: 550-225 (Kirby Morgan Dive Systems Inc), 592-6318215 (Naval Sea Systems Command).
There are 3 known substitutes for 4220-01-331-1741: 3110-00-100-0547, 5998-00-985-0980, 5895-01-580-7443. Verify interchangeability with system specifications before substitution.
Key specifications for 550-225: End Item Identification: MK21 MOD1 DIVING HELMET. 1 total characteristics are documented in the Federal Logistics Information System.