The Valve,butterfly, cataloged under National Stock Number 4820-01-182-2489, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-182-2489 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| 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 | AISI 416 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 5.000 INCHES IN |
| Maximum Operating Temp | 180.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | STEEL COMP 416 STEM |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAT |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING |
| Material | COPPER ALLOY 922 BODY |
| 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 |
| Reference | Meaning |
|---|---|
| 911-420 | D/9 Drawing number reference only U.S. Government activity |
| 911H420 | 3/2 Design control — primary reference U.S. Government activity |
| 5IN R1020-43AA-1FM | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-182-2489 is a Valve,butterfly, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3040-01-467-8202. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-182-2489: 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: AISI 416 ASSN STD SINGLE MATERIAL RESPONSE SEAT. 13 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.