The Valve,butterfly, cataloged under National Stock Number 4820-01-412-5256, 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 8 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-412-5256 |
| Primary Part Number | 3855-1724319 CD-16455-17 REV B |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Cooper Cameron Corp Cooper Cameron Valves Div |
| Status | ACTIVE |
| Style Designator | STRAIGHT THRU |
| Valve Size | 2.500 INCHES IN |
| Mounting Facility | WAFER |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | STEEL COMP 316 STEM |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAT |
| Material | COPPER ALLOY 922 BODY |
| 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 |
|---|---|
| 3855-1724319 CD-16455-17 REV B PRIMARY | Cooper Cameron Corp Cooper Cameron Valves Div (USA) |
| D-80492 CD-16455-17 REV B | Cooper Cameron Corp Cooper Cameron Valves Div (USA) |
NSN 4820-01-412-5256 is a Valve,butterfly, manufactured by Cooper Cameron Corp Cooper Cameron Valves Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-412-5256 has 2 manufacturer part numbers on file: 3855-1724319 CD-16455-17 REV B (Cooper Cameron Corp Cooper Cameron Valves Div), D-80492 CD-16455-17 REV B (Cooper Cameron Corp Cooper Cameron Valves Div).
Key specifications for 3855-1724319 CD-16455-17 REV B: Style Designator: STRAIGHT THRU; Valve Size: 2.500 INCHES IN; Mounting Facility: WAFER; Special Features: INCLUDES MANUAL GEAR OPERATOR 2098-11312 AND STEM EXTENTION 6991-00400. 8 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.