The Valve,breathing Apparatus, cataloged under National Stock Number 4220-01-470-7967, 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. Government technical data includes 1 specification, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4220-01-470-7967 |
| Primary Part Number | A6195839-1 |
| Item Name | Valve,breathing Apparatus |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Mission Systems Orchard Park Inc |
| Status | ACTIVE |
| Overall Diameter | 3.120 INCHES NOMINAL IN |
| 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 |
|---|---|
| A6195839-1 | Msi-Defence Systems Ltd (GBR) |
| A6195839-1 PRIMARY | Mission Systems Orchard Park Inc (USA) |
| Reference | Meaning |
|---|---|
| A6195839 | D/9 Drawing number reference only Carleton Technologies Inc Div Tampa Facility |
| A6195839 | 5/1 Secondary reference Msi-Defence Systems Ltd |
| A6195839-1 | 5/9 Secondary reference Carleton Technologies Inc Div Tampa Facility |
NSN 4220-01-470-7967 is a Valve,breathing Apparatus, manufactured by Mission Systems Orchard Park Inc, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-470-7967 has 2 manufacturer part numbers on file: A6195839-1 (Msi-Defence Systems Ltd), A6195839-1 (Mission Systems Orchard Park Inc).
Key specifications for A6195839-1: Overall Diameter: 3.120 INCHES NOMINAL IN; Overall Length: 1.980 INCHES NOMINAL IN; Special Features: MATERIALDUPONT ZYTEL, BLACK; ALL THREADS TO BE FREE FROM PLASTIC MATERIAL; Part Name Assigned by Controlling Agency: BODY ASSEMBLY BY-PASS VALVE OXYGEN. 1 specification is 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.