The Disk,rupturable, cataloged under National Stock Number 4820-01-451-7920, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Draeger Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-451-7920 |
| Primary Part Number | 4054787 |
| Item Name | Disk,rupturable |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Draeger Inc |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 WASHER |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 4054787 | Draeger Inc (USA) |
| Reference | Meaning |
|---|---|
| 4054787CP | 3/1 Design control — primary reference Naval Inventory Control Point Mechanicsburg |
| 4054787 OXYGEN CLEANCP | 5/9 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 4054787 | 5/9 Secondary reference Draeger Safety, Inc. |
| 4054787 OXYGEN CLEAN | 5/9 Secondary reference Draeger Safety, Inc. |
NSN 4820-01-451-7920 is a Disk,rupturable, manufactured by Draeger Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-451-7920 has 1 manufacturer part number on file: 4054787 (Draeger Inc).
Key specifications for 4054787: Furnished Items and Quantity: 1 WASHER; Criticality Code Justification: ZZZY; End Item Identification: DIVERS LIFE SUPPORT SYSTEM; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330. 3 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.