The Valve,butterfly, cataloged under National Stock Number 4820-01-540-5871, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp. Government technical data includes 10 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-540-5871 |
| Primary Part Number | 1KW08PN6-VNB31-B8 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 HANDWHEEL |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Valve Size | 8.000 INCHES IN |
| Face to Face Distance | 2.500 INCHES IN |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Material | STEEL STEM |
| Material | STEEL COMP 316 FLOW CONTROL DEVICE |
| Material | STEEL UNS J92900 SEAT |
| Material | STEEL UNS J92900 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 |
|---|---|
| 1KW08PN6-VNB31-B8 PRIMARY | Emerson Automation Solutions Final Control Us Lp (USA) |
| Reference | Meaning |
|---|---|
| VNB31-2 | D/9 Drawing number reference only Emerson Automation Solutions Final Control Us Lp |
| 1KW08PN6 | D/9 Drawing number reference only Emerson Automation Solutions Final Control Us Lp |
| USXADW02 | D/9 Drawing number reference only Emerson Automation Solutions Final Control Us Lp |
| MIL-DTL-24624 | 4/1 Identification reference U.S. Government activity |
| MIL-V-24624 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-540-5871 is a Valve,butterfly, manufactured by Emerson Automation Solutions Final Control Us Lp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-540-5871 has 1 manufacturer part number on file: 1KW08PN6-VNB31-B8 (Emerson Automation Solutions Final Control Us Lp).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-540-5885, 4820-01-540-5904. Verify interchangeability with system specifications before substitution.
Key specifications for 1KW08PN6-VNB31-B8: Furnished Items and Quantity: 1 HANDWHEEL; Style Designator: STRAIGHT THRU FLANGED ENDS; Valve Size: 8.000 INCHES IN; Special Features: STEM IS STEEL ST0710, ASTM A479 XN19; APPLICATION: JP5, SUPPLIED WITH GEAR OPERATOR, P/N VBN31-2; REQUIRES PARTS KIT M200B2AAA0. 10 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.