NSN 4820-01-398-2089 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-398-2089. Manufacturer of record part number: VT40.
Also searched as4820-01-398-2089 ·
4820013982089 ·
NIIN 013982089 ·
01-398-2089 ·
FSC 4820 Valves, Nonpowered · CAGE 57574 · VT40 · 9500-029 · 9500-029 MODEL VT40
The Gear Operator,valve, cataloged under National Stock Number 4820-01-398-2089, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-398-2089
Primary Part Number
VT40
Item Name
Gear Operator,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Velan Valve Corp.
Status
ACTIVE
Gear Type
BEVEL
Features Provided
HANDWHEEL
Material
IRON
Gear Ratio
24 TO 1
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3020-01-449-22409500-106-527POSSIBLE MATCH
GEAR SET,BEVEL,MATCHED
Possible match (shared part number)Velan Valve Corp.
4820-01-469-5573VT60/SGA-43:1 AND 9500-029POSSIBLE MATCH
GEAR OPERATOR,VALVE
Possible match (shared part number)Velan Valve Corp.
3020-01-469-55869500-603-527POSSIBLE MATCH
GEAR SET,BEVEL,MATCHED
Possible match (shared part number)Velan Valve Corp.
3020-01-469-56789500-608-527POSSIBLE MATCH
GEAR SET,BEVEL,MATCHED
Possible match (shared part number)Velan Valve Corp.
3020-01-469-56859500-610-527POSSIBLE MATCH
GEAR SET,SPUR,MATCHED
Possible match (shared part number)Velan Valve Corp.
NSN 4820-01-398-2089 is a Gear Operator,valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-398-2089?
NSN 4820-01-398-2089 has 2 manufacturer part numbers on file: VT40 (Velan Valve Corp.), 9500-029 MODEL VT40 (Velan Valve Corp.).
What NSN replaces 4820-01-398-2089?
5 possible matches (shared part number, not a government interchangeability claim): 3020-01-449-2240, 4820-01-469-5573, 3020-01-469-5586. Verify interchangeability with system specifications before substitution.
What are the specifications of VT40?
Key specifications for VT40: Gear Type: BEVEL; Features Provided: HANDWHEEL; Special Features: 8 THD MOUNTED HOLES; Material: IRON. 4 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-398-2089 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.