NSN 4820-00-540-2089 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-540-2089. Manufacturer of record part number: FV19-644-6.
Also searched as4820-00-540-2089 ·
4820005402089 ·
NIIN 005402089 ·
00-540-2089 ·
FSC 4820 Valves, Nonpowered · CAGE 04845 · FV19-644-6
Pressure Rating: 125.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
Outside Diameter: 1.625 INCHES NOMINAL IN
Style Designator: PLAIN
Inside Diameter: 0.781 INCHES NOMINAL IN
Media for Which Designed: WATER
Material: RUBBER
1 manufacturer part number on file
Identification
NSN: 4820-00-540-2089
NIIN: 005402089
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: FV19-644-6
Manufacturer: Automatic Switch Company Dba Asco
General Description
The Disk,valve, cataloged under National Stock Number 4820-00-540-2089, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Automatic Switch Company Dba Asco. Government technical data includes 6 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. Current acquisition status: Active.
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
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4820-00-001-0021 · Item name not on file
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4820-00-001-0042 · Item name not on file
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4820-00-001-1230 · Item name not on file
Frequently Asked Questions
What is NSN 4820-00-540-2089?
NSN 4820-00-540-2089 is a Disk,valve, manufactured by Automatic Switch Company Dba Asco, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-00-540-2089?
NSN 4820-00-540-2089 has 1 manufacturer part number on file: FV19-644-6 (Automatic Switch Company Dba Asco).
What are the specifications of FV19-644-6?
Key specifications for FV19-644-6: Overall Height: 0.344 INCHES NOMINAL IN; Pressure Rating: 125.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Outside Diameter: 1.625 INCHES NOMINAL IN; Style Designator: PLAIN. 6 specifications are documented in the U.S. Government catalog.
Is NSN 4820-00-540-2089 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.