The Valve,safety Relief, cataloged under National Stock Number 4820-01-666-6539, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Northern Lights Inc. Government technical data includes 2 specifications, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-666-6539 |
| Primary Part Number | 1314245720 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Northern Lights Inc |
| Status | ACTIVE |
| Style Designator | STRAIGHT THRU |
| 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 |
|---|---|
| 1314245720 PRIMARY | Northern Lights Inc (USA) |
NSN 4820-01-666-6539 is a Valve,safety Relief, manufactured by Northern Lights Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-666-6539 has 1 manufacturer part number on file: 1314245720 (Northern Lights Inc).
Key specifications for 1314245720: Style Designator: STRAIGHT THRU; Part Name Assigned by Controlling Agency: OVERFLOW VALVE; Valve Operation Method: AUTOMATIC. 2 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.