PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

050479 ITEM 20Disk,valve

William Powell Company, the Dba Powell Valve Div the Starflo Corporation · NSN 4820-01-344-4022 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-344-4022 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-344-4022. Primary manufacturer part number: 050479 ITEM 20.
Features
  • Disk,valve — FSC 4820
  • Media for Which Designed: WATER
  • Style Designator: SPLIT WEDGE
  • Material: STEEL CORROSION RESISTING
  • Seat Angle: 45.0 DEGREES NOMINAL
  • 4 verified cross-references
  • Primary manufacturer: William Powell Company, the Dba Powell Valve Div the Starflo Corporation
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-344-4022, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is William Powell Company, the Dba Powell Valve Div the Starflo Corporation. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-344-4022
Primary Part Number050479 ITEM 20
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWilliam Powell Company, the Dba Powell Valve Div the Starflo Corporation
StatusACTIVE
Media for Which DesignedWATER
Style DesignatorSPLIT WEDGE
MaterialSTEEL CORROSION RESISTING
Seat Angle45.0 DEGREES NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4820-01-344-6871105443 INTERCHANGEABLE
Stem,fluid Valve
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
5340-01-531-2652108583 INTERCHANGEABLE
Plate,mounting
Hamilton Jet, Inc.
5821-01-542-71631E421-101 INTERCHANGEABLE
Receiver,radio
Kratos Unmanned Aerial Systems, Inc Div Unmanned Systems Division
Cross-Reference Index
Part NumberManufacturer
060470 PART 108583 William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
060470 William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
050479 ITEM 20 PRIMARY William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
108583 William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
Related Parts
4820-01-344-6871INTERCHANGEABLE
STEM,FLUID VALVE
105443
5340-01-531-2652INTERCHANGEABLE
PLATE,MOUNTING
108583
5821-01-542-7163INTERCHANGEABLE
RECEIVER,RADIO
1E421-101

Frequently Asked Questions

What is NSN 4820-01-344-4022?

NSN 4820-01-344-4022 is a Disk,valve, manufactured by William Powell Company, the Dba Powell Valve Div the Starflo Corporation, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-344-4022?

NSN 4820-01-344-4022 has 4 cross-referenced part numbers: 060470 PART 108583 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 060470 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 050479 ITEM 20 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 108583 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation).

What NSN replaces 4820-01-344-4022?

There are 3 known substitutes for 4820-01-344-4022: 4820-01-344-6871, 5340-01-531-2652, 5821-01-542-7163. Verify interchangeability with system specifications before substitution.

What are the specifications of 050479 ITEM 20?

Key specifications for 050479 ITEM 20: Media for Which Designed: WATER; Style Designator: SPLIT WEDGE; Material: STEEL CORROSION RESISTING; Seat Angle: 45.0 DEGREES NOMINAL. 5 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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