The Valve,butterfly, cataloged under National Stock Number 4820-01-146-8569, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Cooper Cameron Corp Cooper Cameron Valves Div. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-146-8569 |
| Primary Part Number | X3855-1333311 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Cooper Cameron Corp Cooper Cameron Valves Div |
| Status | ACTIVE |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 180.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | NICKEL ALLOY STEM |
| Material | BRONZE BODY |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Material | RUBBER SEAT |
| 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 |
|---|---|
| M4124 | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA) |
| X3855-1333311 PRIMARY | Cooper Cameron Corp Cooper Cameron Valves Div (USA) |
| Reference | Meaning |
|---|---|
| M4124 | 5/9 Secondary reference Derbyshire Machine & Tool Co |
NSN 4820-01-146-8569 is a Valve,butterfly, manufactured by Cooper Cameron Corp Cooper Cameron Valves Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-146-8569 has 2 manufacturer part numbers on file: M4124 (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc), X3855-1333311 (Cooper Cameron Corp Cooper Cameron Valves Div).
Key specifications for X3855-1333311: Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 180.0 FAHRENHEIT SINGLE RESPONSE DEGF; Material: NICKEL ALLOY STEM; Material: BRONZE BODY. 6 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.