PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

056624 ITEM 20Disk,valve

William Powell Company, the Dba Powell Valve Div the Starflo Corporation · NSN 4820-01-216-2518 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-216-2518 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-216-2518. Primary manufacturer part number: 056624 ITEM 20.
Features
  • Disk,valve — FSC 4820
  • Thread Series Designator: UNS
  • Outside Diameter: 4.115 INCHES MINIMUM AND 4.117 INCHES MAXIMUM IN
  • Nominal Thread Size: 1.687 INCHES IN
  • Style Designator: PLUG
  • Material: STEEL CORROSION RESISTING
  • Seat Angle: 15.0 DEGREES NOMINAL
  • 3 verified cross-references
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 4820-01-216-2518, 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 6 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-216-2518
Primary Part Number056624 ITEM 20
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWilliam Powell Company, the Dba Powell Valve Div the Starflo Corporation
StatusACTIVE
Thread Series DesignatorUNS
Outside Diameter4.115 INCHES MINIMUM AND 4.117 INCHES MAXIMUM IN
Nominal Thread Size1.687 INCHES IN
Style DesignatorPLUG
MaterialSTEEL CORROSION RESISTING
Seat Angle15.0 DEGREES NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5930-00-153-8819W130647 INTERCHANGEABLE
Switch,thermostatic
Sears, Roebuck and Co. Dba Sears Div Sears Commercial
5815-00-872-3487 INTERCHANGEABLE
Lever Assembly,key
4820-01-216-22331531WE 4IN AND 056624 INTERCHANGEABLE
Valve,globe
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4820-01-216-2386056624 ITEM 7 INTERCHANGEABLE
Stem,fluid Valve
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4820-01-216-4095056624 ITEM 21 INTERCHANGEABLE
Seat,valve
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4720-01-689-079856624 INTERCHANGEABLE
Hose,nonmetallic
Westerbeke Corporation
Cross-Reference Index
Part NumberManufacturer
130647 William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
056624 William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
056624 ITEM 20 PRIMARY William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
Related Parts
5930-00-153-8819INTERCHANGEABLE
SWITCH,THERMOSTATIC
W130647
5815-00-872-3487INTERCHANGEABLE
LEVER ASSEMBLY,KEY
4820-01-216-2233INTERCHANGEABLE
VALVE,GLOBE
1531WE 4IN AND 056624
4820-01-216-2386INTERCHANGEABLE
STEM,FLUID VALVE
056624 ITEM 7
4820-01-216-4095INTERCHANGEABLE
SEAT,VALVE
056624 ITEM 21
4720-01-689-0798INTERCHANGEABLE
HOSE,NONMETALLIC
56624

Frequently Asked Questions

What is NSN 4820-01-216-2518?

NSN 4820-01-216-2518 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 4820-01-216-2518?

NSN 4820-01-216-2518 has 3 cross-referenced part numbers: 130647 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 056624 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 056624 ITEM 20 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation).

What NSN replaces 4820-01-216-2518?

There are 6 known substitutes for 4820-01-216-2518: 5930-00-153-8819, 5815-00-872-3487, 4820-01-216-2233 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 056624 ITEM 20?

Key specifications for 056624 ITEM 20: Thread Series Designator: UNS; Outside Diameter: 4.115 INCHES MINIMUM AND 4.117 INCHES MAXIMUM IN; Overall Height: 3.250 INCHES NOMINAL IN; Nominal Thread Size: 1.687 INCHES IN. 7 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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