The Valve Assembly, cataloged under National Stock Number 4820-01-478-2372, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-478-2372 |
| Primary Part Number | 525-11435-605 |
| Item Name | Valve Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Valve Quantity | 3 |
| Connection Type | FLANGE, ROUND W/O HOLES |
| End Connection Quantity | 9 |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 525-11435-605 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 525-11435-605 | 3/2 Design control — primary reference U.S. Government activity |
| 525-1435-605 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 4820-01-478-2372 is a Valve Assembly, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-478-2372 has 1 manufacturer part number on file: 525-11435-605 (Northrop Grumman Systems Corporation).
Key specifications for 525-11435-605: Valve Quantity: 3; Connection Type: FLANGE, ROUND W/O HOLES; End Connection Quantity: 9; Special Features: MANUFACTURES NAME; VALVE ASSY. MOD. TEMPERATURE CONTROL, CABIN AIR.. 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.