NSN 4820-01-097-0129 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-097-0129. Manufacturer of record part number: 30-5411ALT3LEG18-3 4IN.
Manufacturer of record: Leslie Controls, Inc. Dba Leslie Controls Inc
Identification
NSN: 4820-01-097-0129
NIIN: 010970129
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 30-5411ALT3LEG18-3 4IN
Manufacturer: Leslie Controls, Inc. Dba Leslie Controls Inc
General Description
The Main Valve, cataloged under National Stock Number 4820-01-097-0129, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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
Main Valve
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Leslie Controls, Inc. Dba Leslie Controls Inc (CAGE 35795)
Technical Specifications
Parameter
Value
NSN
4820-01-097-0129
Primary Part Number
30-5411ALT3LEG18-3 4IN
Item Name
Main 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)
⇄Related Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
6650-01-338-256742530POSSIBLE MATCH
LENS,OPTICAL INSTRUMENT
Possible match (shared part number)Oriel Corp
5930-01-350-060942530POSSIBLE MATCH
SWITCH,FLOW
Possible match (shared part number)Thomas Products Llc
7690-01-619-1304388038POSSIBLE MATCH
MARKER,IDENTIFICATION
Possible match (shared part number)Hydrema U.s., Inc. Dba Hydrema Us Inc
6685-01-631-912442530POSSIBLE MATCH
SENSOR,AMBIENT TEMPERATURE
Possible match (shared part number)Extech Instruments Corporation Dba Extech Data Systems Div
Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
6650-01-338-2567POSSIBLE MATCH
LENS,OPTICAL INSTRUMENT
42530
5930-01-350-0609POSSIBLE MATCH
SWITCH,FLOW
42530
7690-01-619-1304POSSIBLE MATCH
MARKER,IDENTIFICATION
388038
6685-01-631-9124POSSIBLE MATCH
SENSOR,AMBIENT TEMPERATURE
42530
Frequently Asked Questions
What is NSN 4820-01-097-0129?
NSN 4820-01-097-0129 is a Main 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 4820-01-097-0129?
NSN 4820-01-097-0129 has 2 manufacturer part numbers on file: 30-5411ALT3LEG18-3 4IN (Leslie Controls, Inc. Dba Leslie Controls Inc), 42530 (Leslie Controls, Inc. Dba Leslie Controls Inc).
What NSN replaces 4820-01-097-0129?
4 possible matches (shared part number, not a government interchangeability claim): 6650-01-338-2567, 5930-01-350-0609, 7690-01-619-1304. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-097-0129 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.