The Gear Operator,valve, cataloged under National Stock Number 4820-01-522-4070, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-522-4070 |
| Primary Part Number | 6600-001-000 |
| Item Name | Gear Operator,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque |
| Status | ACTIVE |
| Valve Type for Which Designed | BUTTERFLY |
| Gear Ratio | 1 TO 1 |
| 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 |
|---|---|
| 6622/1 REV A FN 1 | Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque (USA) |
| 6622/1 PL REV - FN 1 | Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque (USA) |
| 6600-001-000 PRIMARY | Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque (USA) |
| Reference | Meaning |
|---|---|
| 6622/1 | D/9 Drawing number reference only Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque |
NSN 4820-01-522-4070 is a Gear Operator,valve, manufactured by Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-522-4070 has 3 manufacturer part numbers on file: 6622/1 REV A FN 1 (Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque), 6622/1 PL REV - FN 1 (Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque), 6600-001-000 (Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque).
Key specifications for 6600-001-000: Valve Type for Which Designed: BUTTERFLY; Part Name Assigned by Controlling Agency: OUTPUT ASSEMBLY; End Item Identification: MODEL MS6R ACTUATOR; Gear Ratio: 1 TO 1. 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.