The Valve,butterfly, cataloged under National Stock Number 4820-01-431-1269, 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. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-431-1269 |
| Primary Part Number | 020-703-080-129-162 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Bolt Circle Nominal Diameter | 11.750 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Valve Size | 8.000 INCHES IN |
| Bolt Hole Quantity | 8 ALL ENDS |
| Material | RUBBER SYNTHETIC PACKING |
| Material | STEEL CORROSION RESISTING STEM |
| Material | RUBBER SYNTHETIC SEAT |
| Material | IRON FLOW CONTROL DEVICE |
| Valve Operation Method | MANUAL |
| Nominal Thickness | 2.656 INCHES ALL ENDS IN |
| 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 |
|---|---|
| D129-8-020 | Emerson Automation Solutions Final Control Us Lp (USA) |
| 129-1 8IN | Emerson Automation Solutions Final Control Us Lp (USA) |
| 020-703-080-129-162 PRIMARY | Emerson Automation Solutions Final Control Us Lp (USA) |
| Reference | Meaning |
|---|---|
| 020-703-080-129-062 | 5/9 Secondary reference Emerson Automation Solutions Final Control Us Lp |
NSN 4820-01-431-1269 is a Valve,butterfly, manufactured by Emerson Automation Solutions Final Control Us Lp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-431-1269 has 3 manufacturer part numbers on file: D129-8-020 (Emerson Automation Solutions Final Control Us Lp), 129-1 8IN (Emerson Automation Solutions Final Control Us Lp), 020-703-080-129-162 (Emerson Automation Solutions Final Control Us Lp).
Key specifications for 020-703-080-129-162: Flange Shape: ROUND WITH HOLES ALL ENDS; Bolt Circle Nominal Diameter: 11.750 INCHES ALL ENDS IN; Connection Type: FLANGE ALL ENDS; Style Designator: STRAIGHT THRU. 12 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.