The Head and Disk,safety,pressure Re, cataloged under National Stock Number 4820-01-440-8934, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Carrier Corp. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-440-8934 |
| Primary Part Number | 19XB-430J56023 ITEM 141 |
| Item Name | Head and Disk,safety,pressure Re |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Carrier Corp |
| Status | ACTIVE |
| Disk Material | STEEL |
| Burst Pressure | 300.0 PRESSURE POUNDS PER SQUARE INCH GAGE |
| Burst Temperature | 72.0 FAHRENHEIT DEGF |
| Features Provided | NICKEL PLATED AND NONFRAGMENTING |
| 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 |
|---|---|
| 19XB-430J56023 ITEM 141 | Carrier Corp (USA) |
| 5628-300 | Carrier Corp (USA) |
| Reference | Meaning |
|---|---|
| 5628-300 | 5/9 Secondary reference Henry Technologies, Inc. |
| 5628-300-CE | 3/9 Design control — primary reference Henry Technologies, Inc. |
NSN 4820-01-440-8934 is a Head and Disk,safety,pressure Re, manufactured by Carrier Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-440-8934 has 2 manufacturer part numbers on file: 19XB-430J56023 ITEM 141 (Carrier Corp), 5628-300 (Carrier Corp).
Key specifications for 19XB-430J56023 ITEM 141: Disk Material: STEEL; Burst Pressure: 300.0 PRESSURE POUNDS PER SQUARE INCH GAGE; Burst Temperature: 72.0 FAHRENHEIT DEGF; Features Provided: NICKEL PLATED AND NONFRAGMENTING. 4 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.