The Valve,safety Relief, cataloged under National Stock Number 4820-01-331-6483, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Prince Manufacturing Corporation. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Prince Manufacturing Corporation (CAGE 29260) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-331-6483 |
| Primary Part Number | RD-1837H |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Prince Manufacturing Corporation |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| RD-1837H | Prince Manufacturing Corporation (USA) |
| Reference | Meaning |
|---|---|
| D30463 | 3/9 Design control — primary reference Ingersoll-Rand Canada Inc |
NSN 4820-01-331-6483 is a Valve,safety Relief, manufactured by Prince Manufacturing Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-331-6483 has 1 manufacturer part number on file: RD-1837H (Prince Manufacturing Corporation).
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.