The Cover-Plate,bleed Valve, cataloged under National Stock Number 4820-00-820-7792, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Boyd Corporation (woburn) Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-820-7792 |
| Primary Part Number | 371P20 |
| Item Name | Cover-Plate,bleed Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Boyd Corporation (woburn) Inc |
| Status | ACTIVE |
| FSC Application Data | VALVE,GATE,NONPOWERED |
| General Characteristics Item Description | CRES,PASSIVATED,4.075 IN. LG,2.490 IN. W IN |
| 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 |
|---|---|
| 371P20 PRIMARY | Boyd Corporation (woburn) Inc (USA) |
| Reference | Meaning |
|---|---|
| 374P20 | 5/9 Secondary reference Boyd Corporation (woburn) Inc |
NSN 4820-00-820-7792 is a Cover-Plate,bleed Valve, manufactured by Boyd Corporation (woburn) Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-820-7792 has 1 manufacturer part number on file: 371P20 (Boyd Corporation (woburn) Inc).
Key specifications for 371P20: FSC Application Data: VALVE,GATE,NONPOWERED; General Characteristics Item Description: CRES,PASSIVATED,4.075 IN. LG,2.490 IN. W IN; End Item Identification: 4820001689832 378G3 VALVE. 2 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.