The Valve,safety Relief, cataloged under National Stock Number 4820-01-680-9161, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-680-9161 |
| Primary Part Number | 7246253-45 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Supplementary Features | MUST BE CLEANED AND PACKAGED IAW THE LATEST REVISION OF MIL-STD-1330 |
| 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 |
|---|---|
| 7246253-45 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 7246253 | D/9 Drawing number reference only Naval Sea Systems Command |
| 504 SET 3300 PSIG | 5/1 Secondary reference Aqua Environment Co, Inc |
NSN 4820-01-680-9161 is a Valve,safety Relief, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-680-9161 has 1 manufacturer part number on file: 7246253-45 (Naval Sea Systems Command).
Key specifications for 7246253-45: Supplementary Features: MUST BE CLEANED AND PACKAGED IAW THE LATEST REVISION OF MIL-STD-1330; Part Name Assigned by Controlling Agency: VALVE, RELIEF; End Item Identification: FILTER AY SCBA. 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.