The Valve,safety Relief,oxygen Syste, cataloged under National Stock Number 4820-01-415-0802, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Rockwood Swendeman. Government technical data includes 17 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-415-0802 |
| Primary Part Number | 710NACD-A |
| Item Name | Valve,safety Relief,oxygen Syste |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Rockwood Swendeman |
| Status | ACTIVE |
| Connection Style | PLAIN,OPTIONAL END(PIPE) SECOND END |
| Connection Style | PLAIN (PIPE) FIRST END |
| Minimum Operating Temp | -320.0 FAHRENHEIT DEGF |
| Connection Type | THREADED INTERNAL PIPE SECOND END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Style Designator | ANGLE |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.750 INCHES SECOND END IN |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Media for Which Designed | NITROGEN, LIQUID BODY LINING |
| Media for Which Designed | OXYGEN, LIQUID FLOW CONTROL DEVICE |
| Material | COPPER ALLOY BODY |
| Thread Series Designator | NPT SECOND END |
| Thread Series Designator | NPT FIRST END |
| Opening Pressure Setting | 55.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 50C-0033-0268 | Essex Industries, Inc. Dba Essex Industries (USA) |
| 710NACD-A PRIMARY | Rockwood Swendeman (USA) |
| Reference | Meaning |
|---|---|
| 508-0116-3-55 | 5/9 Secondary reference Rockwood Swendeman |
NSN 4820-01-415-0802 is a Valve,safety Relief,oxygen Syste, manufactured by Rockwood Swendeman, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-415-0802 has 2 manufacturer part numbers on file: 50C-0033-0268 (Essex Industries, Inc. Dba Essex Industries), 710NACD-A (Rockwood Swendeman).
Key specifications for 710NACD-A: Connection Style: PLAIN,OPTIONAL END(PIPE) SECOND END; Connection Style: PLAIN (PIPE) FIRST END; Minimum Operating Temp: -320.0 FAHRENHEIT DEGF; Connection Type: THREADED INTERNAL PIPE SECOND END. 17 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.