The Head,safety,pressure Relief, cataloged under National Stock Number 4820-01-449-8222, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hrp Ltd. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-449-8222 |
| Primary Part Number | 298514 |
| Item Name | Head,safety,pressure Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hrp Ltd |
| Status | ACTIVE |
| Burst Pressure | 235.0 PRESSURE POUNDS PER SQUARE INCH GAGE |
| 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 |
|---|---|
| 298514 | Hrp Ltd (GBR) |
| 5526-16.2 BAR-CE | Henry Technologies Limited (GBR) |
| 5526-235 | Henry Technologies Limited (GBR) |
| KWMLCF.001.181 | Van Halteren Naval Technologies B.v. (NLD) |
| LF-40280 | Lightfoot Defence Limited (GBR) |
| 20J23491 | Ernest West & Beynon Ltd (GBR) |
| Reference | Meaning |
|---|---|
| KWMLCF.001.181 | 5/9 Secondary reference Van Halteren Special Products B.v. |
| 5526-235 | 3/9 Design control — primary reference Henry Technologies, Inc. |
NSN 4820-01-449-8222 is a Head,safety,pressure Relief, manufactured by Hrp Ltd, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-449-8222 has 6 manufacturer part numbers on file: 298514 (Hrp Ltd), 5526-16.2 BAR-CE (Henry Technologies Limited), 5526-235 (Henry Technologies Limited), KWMLCF.001.181 (Van Halteren Naval Technologies B.v.), LF-40280 (Lightfoot Defence Limited) and 1 more.
Key specifications for 298514: Burst Pressure: 235.0 PRESSURE POUNDS PER SQUARE INCH GAGE; Special Features: INLET 0.375 IN; OUTLET 0.375 IN; MATL BRASS IN. 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.