The Valve,butterfly, cataloged under National Stock Number 4820-01-192-1528, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dover Resources, Inc. Div Norriseal. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-192-1528 |
| Primary Part Number | 911G486 911-486 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dover Resources, Inc. Div Norriseal |
| Status | ACTIVE |
| Minimum Operating Temp | -30.0 FAHRENHEIT DEGF |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM B148 ALLOY 9C ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | ASTM B164 CLASS A ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 4.000 INCHES IN |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAT |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING |
| Material | COPPER ALLOY 922 BODY |
| Material | NICKEL ALLOY 400 STEM |
| Material | COPPER ALLOY 954 FLOW CONTROL DEVICE |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| 911G486 911-486 PRIMARY | Dover Resources, Inc. Div Norriseal (USA) |
| Reference | Meaning |
|---|---|
| 911-486 | D/9 Drawing number reference only U.S. Government activity |
| 911G486 911-486 | 5/9 Secondary reference U.S. Government activity |
| R2030-43AA-2KM | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-192-1528 is a Valve,butterfly, manufactured by Dover Resources, Inc. Div Norriseal, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-192-1528 has 1 manufacturer part number on file: 911G486 911-486 (Dover Resources, Inc. Div Norriseal).
Key specifications for 911G486 911-486: Minimum Operating Temp: -30.0 FAHRENHEIT DEGF; Style Designator: STRAIGHT THRU; Material Document and Classification: ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY; Material Document and Classification: ASTM B148 ALLOY 9C ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE. 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.