The Valve,butterfly, cataloged under National Stock Number 4820-01-133-7324, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Kovatch Corp.. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-133-7324 |
| Primary Part Number | K-500-0022 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Kovatch Corp. |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Flange Face Design | PLAIN ALL ENDS |
| Bolt Circle Nominal Diameter | 4.875 INCHES ALL ENDS IN |
| Style Designator | STRAIGHT THRU |
| Bolt Hole Nominal Diameter | 0.438 INCHES ALL ENDS IN |
| Operating Pressure | 180.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Outside Diameter | 5.625 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 8 ALL ENDS |
| Material | ALUMINUM ALLOY BODY |
| Valve Operation Method | MANUAL |
| Nominal Thickness | 1.125 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 |
|---|---|
| K-500-2000 FIND NO 37 | Kovatch Corp. (USA) |
| K-500-0022 PRIMARY | Kovatch Corp. (USA) |
| WD301-ALVB PRIMARY | Betts Industries, Inc. (USA) |
| Reference | Meaning |
|---|---|
| WD301-AL-V | 3/9 Design control — primary reference Betts Industries, Inc. |
| K-500-0022 | 5/9 Secondary reference Betts Industries, Inc. |
NSN 4820-01-133-7324 is a Valve,butterfly, manufactured by Kovatch Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-133-7324 has 3 manufacturer part numbers on file: K-500-2000 FIND NO 37 (Kovatch Corp.), K-500-0022 (Kovatch Corp.), WD301-ALVB (Betts Industries, Inc.).
Key specifications for K-500-0022: Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Bolt Circle Nominal Diameter: 4.875 INCHES ALL ENDS IN; Style Designator: STRAIGHT THRU. 11 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.