The Valve,regulating,system Pressure, cataloged under National Stock Number 4820-01-464-8840, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-464-8840 |
| Primary Part Number | MC12322-6 |
| Item Name | Valve,regulating,system Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace |
| Status | ACTIVE |
| Criticality Code Justification | AGAV |
| Reference Number Differentiating Characteristics | AS INDICATED ON DRAWING 901-380-043 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| MC12322-6 | Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace (USA) |
| 901-380-043-105 | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| MC12322-6 | 5/3 Secondary reference U.S. Government activity |
NSN 4820-01-464-8840 is a Valve,regulating,system Pressure, manufactured by Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-464-8840 has 2 manufacturer part numbers on file: MC12322-6 (Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace), 901-380-043-105 (The Boeing Company).
Key specifications for MC12322-6: Criticality Code Justification: AGAV; Part Name Assigned by Controlling Agency: RAMP CONTROL VALVE; End Item Identification: USED ON V-22 AIRCRAFT; Reference Number Differentiating Characteristics: AS INDICATED ON DRAWING 901-380-043. 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.