The Valve,butterfly, cataloged under National Stock Number 4820-01-462-5398, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mueller Co. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-462-5398 |
| Primary Part Number | 4.0-51INK-3-1 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Mueller Co |
| Status | ACTIVE |
| Renewable Seat Ring Type | PRESSED-IN |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM A536 ASSN STD ALL MATERIAL RESPONSES BODY |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 4.000 INCHES IN |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | IRON BODY |
| 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 |
|---|---|
| 4.0-51INK-3-1 PRIMARY | Mueller Co (USA) |
| Reference | Meaning |
|---|---|
| AN-TAB-51-F | D/9 Drawing number reference only Mueller Co |
NSN 4820-01-462-5398 is a Valve,butterfly, manufactured by Mueller Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-462-5398 has 1 manufacturer part number on file: 4.0-51INK-3-1 (Mueller Co).
Key specifications for 4.0-51INK-3-1: Renewable Seat Ring Type: PRESSED-IN; Style Designator: STRAIGHT THRU; Material Document and Classification: ASTM A536 ASSN STD ALL MATERIAL RESPONSES BODY; Operating Pressure: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 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.