The Valve,safety Relief,oxygen Syste, cataloged under National Stock Number 4820-01-634-0669, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Avon Protection Systems Incorporated Dba Avon Protection Systems 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.
| Item Name | Valve,safety Relief,oxygen Syste |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Avon Polymer Products Ltd Div Avon Protection (CAGE U0AP3); Avon Protection Systems Incorporated Dba Avon Protection Systems Inc (CAGE 1LEW5) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-634-0669 |
| Primary Part Number | 161028 |
| Item Name | Valve,safety Relief,oxygen Syste |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Avon Protection Systems Incorporated Dba Avon Protection Systems Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
NSN 4820-01-634-0669 is a Valve,safety Relief,oxygen Syste, manufactured by Avon Protection Systems Incorporated Dba Avon Protection Systems Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-634-0669 has 2 manufacturer part numbers on file: 161028 (Avon Polymer Products Ltd Div Avon Protection), 161028 (Avon Protection Systems Incorporated Dba Avon Protection Systems Inc).
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.