NSN 4820-01-444-1433 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-444-1433. Manufacturer of record part number: 298-00-656 3IN ITEM 9.
Manufacturer of record: Leslie Controls, Inc. Dba Leslie Controls Inc
Identification
NSN: 4820-01-444-1433
NIIN: 014441433
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 298-00-656 3IN ITEM 9
Manufacturer: Leslie Controls, Inc. Dba Leslie Controls Inc
General Description
The Seat,valve, cataloged under National Stock Number 4820-01-444-1433, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Seat,valve
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Leslie Controls, Inc. Dba Leslie Controls Inc (CAGE 35795)
Technical Specifications
Parameter
Value
NSN
4820-01-444-1433
Primary Part Number
298-00-656 3IN ITEM 9
Item Name
Seat,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Leslie Controls, Inc. Dba Leslie Controls Inc
Status
ACTIVE
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 Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-444-1596298-00-656 4INPOSSIBLE MATCH
VALVE,BALL
Possible match (shared part number)Leslie Controls, Inc. Dba Leslie Controls Inc
4820-01-444-1670298-00-656 4IN ITEM 4POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Leslie Controls, Inc. Dba Leslie Controls Inc
4820-01-444-1709298-00-656 4IN ITEM 8POSSIBLE MATCH
BALL,VALVE,PORTED
Possible match (shared part number)Leslie Controls, Inc. Dba Leslie Controls Inc
4820-01-444-1864298-00-656 4IN ITEM 9POSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Leslie Controls, Inc. Dba Leslie Controls Inc
Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Reference documents
Reference
Meaning
298-00-656
D/9Drawing number reference only
Leslie Controls, Inc. Dba Leslie Controls Inc
Related Parts
4820-01-444-1596POSSIBLE MATCH
VALVE,BALL
298-00-656 4IN
4820-01-444-1670POSSIBLE MATCH
STEM,FLUID VALVE
298-00-656 4IN ITEM 4
4820-01-444-1709POSSIBLE MATCH
BALL,VALVE,PORTED
298-00-656 4IN ITEM 8
4820-01-444-1864POSSIBLE MATCH
SEAT,VALVE
298-00-656 4IN ITEM 9
Frequently Asked Questions
What is NSN 4820-01-444-1433?
NSN 4820-01-444-1433 is a Seat,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-444-1433?
NSN 4820-01-444-1433 has 1 manufacturer part number on file: 298-00-656 3IN ITEM 9 (Leslie Controls, Inc. Dba Leslie Controls Inc).
What NSN replaces 4820-01-444-1433?
4 possible matches (shared part number, not a government interchangeability claim): 4820-01-444-1596, 4820-01-444-1670, 4820-01-444-1709. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-444-1433 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.