The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-258-7182, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Wartsila Water Systems Limited. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Wartsila Water Systems Limited (CAGE K0359) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-258-7182 |
| Primary Part Number | 65530206 W/33415092 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Wartsila Water Systems Limited |
| 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 |
|---|---|
| 65530206 W/33415092 | Wartsila Water Systems Limited (GBR) |
| Reference | Meaning |
|---|---|
| D-5366 ITEM 211 | 5/9 Secondary reference W B Arnold Company, Inc. |
| D-5366 ITEM 211 | 5/9 Secondary reference Wartsila Water Systems Limited |
| 65530206 W/33415092 | 3/9 Design control — primary reference W B Arnold Company, Inc. |
NSN 4820-01-258-7182 is a Valve,relief,pressure and Temper, manufactured by Wartsila Water Systems Limited, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-258-7182 has 1 manufacturer part number on file: 65530206 W/33415092 (Wartsila Water Systems Limited).
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.