The Valve,butterfly, cataloged under National Stock Number 4820-01-504-7434, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Betts Industries, Inc.. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-504-7434 |
| Primary Part Number | WD206ALB |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Betts Industries, Inc. |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Nominal Pipe Size Accommodated | 2.000 INCHES ALL ENDS IN |
| Flange Face Design | PLAIN ALL ENDS |
| Bolt Circle Nominal Diameter | 3.750 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Bolt Hole Nominal Diameter | 0.440 INCHES ALL ENDS IN |
| Operating Pressure | 75.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 2.000 INCHES IN |
| Nominal Outside Diameter | 4.000 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 6 ALL ENDS |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Material | ALUMINUM BODY |
| Valve Operation Method | MANUAL |
| Nominal Thickness | 1.130 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 |
|---|---|
| WD206ALB PRIMARY | Betts Industries, Inc. (USA) |
| Reference | Meaning |
|---|---|
| WD204ALB | 3/9 Design control — primary reference Betts Industries, Inc. |
| 26074-6 | D/9 Drawing number reference only Betts Industries, Inc. |
NSN 4820-01-504-7434 is a Valve,butterfly, manufactured by Betts Industries, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-504-7434 has 1 manufacturer part number on file: WD206ALB (Betts Industries, Inc.).
Key specifications for WD206ALB: Flange Shape: ROUND WITH HOLES ALL ENDS; Nominal Pipe Size Accommodated: 2.000 INCHES ALL ENDS IN; Flange Face Design: PLAIN ALL ENDS; Bolt Circle Nominal Diameter: 3.750 INCHES ALL ENDS IN. 15 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.