The Valve Special, cataloged under National Stock Number 4820-00-453-2687, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Rolls-Royce Controls and Data Services Limited. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve Special |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Rolls-Royce Controls and Data Services Limited (CAGE U4271) |
| Parameter | Value |
|---|---|
| NSN | 4820-00-453-2687 |
| Primary Part Number | 840-160 |
| Item Name | Valve Special |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Rolls-Royce Controls and Data Services Limited |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 840-160 | Rolls-Royce Controls and Data Services Limited (GBR) |
| Reference | Meaning |
|---|---|
| 4820-99-606 | 6/9 Informative reference only U.S. Government activity |
| 840-160 | 3/2 Design control — primary reference U.S. Government activity |
| 840-160 | 5/9 Secondary reference Goodrich Control Systems Ltd T/a Goodrich Engine Control Systems |
NSN 4820-00-453-2687 is a Valve Special, manufactured by Rolls-Royce Controls and Data Services Limited, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-453-2687 has 1 manufacturer part number on file: 840-160 (Rolls-Royce Controls and Data Services Limited).
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.