The Valve,rotary,selector, cataloged under National Stock Number 4820-01-385-3475, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Rockwell Collins Inc. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-385-3475 |
| Primary Part Number | 51845-2 |
| Item Name | Valve,rotary,selector |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Rockwell Collins Inc |
| Status | ACTIVE |
| Flow Control Device | PORTED ROTOR |
| Maximum Operating Temp and Media for Which Designed | 200.0 FAHRENHEIT AIR DEGF |
| Flow Type | FOUR-WAY |
| Connection Quantity | 4 |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| 51845-2 PRIMARY | Rockwell Collins Inc (USA) |
| Reference | Meaning |
|---|---|
| ZC8-86-017-259-1 | 5/9 Secondary reference Aidc/aerospace Industrial Development Corp. Dba Aidc |
NSN 4820-01-385-3475 is a Valve,rotary,selector, manufactured by Rockwell Collins Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-385-3475 has 1 manufacturer part number on file: 51845-2 (Rockwell Collins Inc).
Key specifications for 51845-2: Flow Control Device: PORTED ROTOR; Maximum Operating Temp and Media for Which Designed: 200.0 FAHRENHEIT AIR DEGF; Flow Type: FOUR-WAY; Special Features: OVERALL LGTH: 7.665 IN. MIN TO 7.735 IN. MAX; EJECT MODE HANDLE, 2.750 IN. LG BY 0.500 IN. H, BY 0.500 IN. W;PORT 1, 3/8-24UNF-3B THREAD; PORT 2, 3/8-24UNF-3B THREAD; PORT 3, 7/16-20 UNF-3B THREAD; PORT 4, 1/2-20UNF-3B THREAD IN. 5 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.