The Valve,regulating,system Pressure, cataloged under National Stock Number 4820-01-478-1384, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Boeing Company. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Valve,regulating,system Pressure |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Triumph Thermal Systems - Maryland, Inc. (CAGE 01359); The Boeing Company (CAGE 8V613) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-478-1384 |
| Primary Part Number | 7-511A21524-3 |
| Item Name | Valve,regulating,system Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| E131024000-1 | Triumph Thermal Systems - Maryland, Inc. (USA) |
| E131024000-01 | Triumph Thermal Systems - Maryland, Inc. (USA) |
| 7-511A21524-3 PRIMARY | The Boeing Company (USA) |
| 7-511A21524 | The Boeing Company (USA) |
NSN 4820-01-478-1384 is a Valve,regulating,system Pressure, manufactured by The Boeing Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-478-1384 has 4 manufacturer part numbers on file: E131024000-1 (Triumph Thermal Systems - Maryland, Inc.), E131024000-01 (Triumph Thermal Systems - Maryland, Inc.), 7-511A21524-3 (The Boeing Company), 7-511A21524 (The Boeing Company).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 4820-01-478-1384 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.