PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FV21-344Stem,fluid Valve

Automatic Switch Company Dba Asco · NSN 4810-01-219-7840 · FSC 4810 · No Item Name Available
Verified by PartsTable
NSN 4810-01-219-7840 — this item is cataloged by the U.S. Government under National Stock Number 4810-01-219-7840. Primary manufacturer part number: FV21-344.
Features
  • Stem,fluid Valve — FSC 4810
  • Valve Type for Which Designed: SOLENOID
  • Valve Size for Which Designed: 0.500 INCHES IN
  • Material: COPPER ALLOY
  • 3 verified cross-references
  • Primary manufacturer: Automatic Switch Company Dba Asco
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy construction
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4810-01-219-7840, is classified within Federal Supply Class 4810 (No Item Name Available) of the Valves group. The primary manufacturer of record is Automatic Switch Company Dba Asco. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4810-01-219-7840
Primary Part NumberFV21-344
Item NameStem,fluid Valve
FSC / FSG4810 / 48 — No Item Name Available
ManufacturerAutomatic Switch Company Dba Asco
StatusACTIVE
Valve Type for Which DesignedSOLENOID
Valve Size for Which Designed0.500 INCHES IN
MaterialCOPPER ALLOY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4810-00-064-5913 INTERCHANGEABLE
Valve,solenoid
4810-01-138-179228-388-31 INTERCHANGEABLE
Core Disk Assembly
Automatic Switch Company Dba Asco
4810-01-219-9255GV64-736-9 INTERCHANGEABLE
Body,valve
Automatic Switch Company Dba Asco
4810-01-447-3000GV28-382-16B INTERCHANGEABLE
Stem,fluid Valve
Automatic Switch Company Dba Asco
4810-01-447-3007 INTERCHANGEABLE
Parts Kit,solenoid Valve
Cross-Reference Index
Part NumberManufacturer
AV65-142 Automatic Switch Company Dba Asco (USA)
FV21-344 PRIMARY Automatic Switch Company Dba Asco (USA)
AV65-142 ITEM 28 Automatic Switch Company Dba Asco (USA)
Related Parts
4810-00-064-5913INTERCHANGEABLE
VALVE,SOLENOID
4810-01-138-1792INTERCHANGEABLE
CORE DISK ASSEMBLY
28-388-31
4810-01-219-9255INTERCHANGEABLE
BODY,VALVE
GV64-736-9
4810-01-447-3000INTERCHANGEABLE
STEM,FLUID VALVE
GV28-382-16B
4810-01-447-3007INTERCHANGEABLE
PARTS KIT,SOLENOID VALVE

Frequently Asked Questions

What is NSN 4810-01-219-7840?

NSN 4810-01-219-7840 is a Stem,fluid Valve, manufactured by Automatic Switch Company Dba Asco, classified under FSC 4810 (No Item Name Available). Status: active.

What are the part numbers for NSN 4810-01-219-7840?

NSN 4810-01-219-7840 has 3 cross-referenced part numbers: AV65-142 (Automatic Switch Company Dba Asco), FV21-344 (Automatic Switch Company Dba Asco), AV65-142 ITEM 28 (Automatic Switch Company Dba Asco).

What NSN replaces 4810-01-219-7840?

There are 5 known substitutes for 4810-01-219-7840: 4810-00-064-5913, 4810-01-138-1792, 4810-01-219-9255 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FV21-344?

Key specifications for FV21-344: Valve Type for Which Designed: SOLENOID; Valve Size for Which Designed: 0.500 INCHES IN; Material: COPPER ALLOY. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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