The Gear Operator,valve, cataloged under National Stock Number 4820-01-609-8931, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp Dba Marine Product Team Div Marine Product Team. Government technical data includes 7 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-609-8931 |
| Primary Part Number | 440-819-120-420-08R |
| Item Name | Gear Operator,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Dba Marine Product Team Div Marine Product Team |
| Status | ACTIVE |
| Valve Type for Which Designed | BUTTERFLY |
| Gear Type | WORM |
| Material Document and Classification | ASTM B584 CDA865/ASTM B202 TP 1,CL A ASSN STD 1ST MATERIAL RESPONSE AND ASTM A536 ASSN STD 2ND MATERIAL RESPONSE AND ANSI B18.3/ASTM A108 ASSN STD 3RD MATERIAL RESPONSE AND COMMERCIAL SPEC MFR REF 4TH MATERIAL RESPONSE |
| Features Provided | HANDWHEEL |
| Valve Size for Which Designed | 8.0 INCHES IN |
| Material | COPPER AND IRON AND STEEL AND STEEL CORROSION RESISTING |
| Gear Ratio | 30 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 |
|---|---|
| 440-819-120-420-08R PRIMARY | Emerson Automation Solutions Final Control Us Lp Dba Marine Product Team Div Marine Product Team (USA) |
NSN 4820-01-609-8931 is a Gear Operator,valve, manufactured by Emerson Automation Solutions Final Control Us Lp Dba Marine Product Team Div Marine Product Team, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-609-8931 has 1 manufacturer part number on file: 440-819-120-420-08R (Emerson Automation Solutions Final Control Us Lp Dba Marine Product Team Div Marine Product Team).
Key specifications for 440-819-120-420-08R: Valve Type for Which Designed: BUTTERFLY; Gear Type: WORM; Material Document and Classification: ASTM B584 CDA865/ASTM B202 TP 1,CL A ASSN STD 1ST MATERIAL RESPONSE AND ASTM A536 ASSN STD 2ND MATERIAL RESPONSE AND ANSI B18.3/ASTM A108 ASSN STD 3RD MATERIAL RESPONSE AND COMMERCIAL SPEC MFR REF 4TH MATERIAL RESPONSE; Features Provided: HANDWHEEL. 7 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.