The Valve,breathing Apparatus, cataloged under National Stock Number 4220-01-484-1663, 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 Mission Systems Orchard Park Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4220-01-484-1663 |
| Primary Part Number | B50133-1 |
| Item Name | Valve,breathing Apparatus |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Mission Systems Orchard Park 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 |
NSN 4220-01-484-1663 is a Valve,breathing Apparatus, manufactured by Mission Systems Orchard Park Inc, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-484-1663 has 2 manufacturer part numbers on file: B50133-1 (Msi-Defence Systems Ltd), B50133-1 (Mission Systems Orchard Park Inc).
Key specifications for B50133-1: Special Features: SHUT OFF VALVE HOUSING; CRES; Part Name Assigned by Controlling Agency: HOUSING, SHUTT OFF, DILUENT; End Item Identification: CLEARANCE DIVER BREATHING APPARATUS (CDBA). 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.