PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

30218Seat,valve

Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val · NSN 4820-01-419-6932 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-419-6932 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-419-6932. Primary manufacturer part number: 30218.
Features
  • Seat,valve — FSC 4820
  • Flange Seat to Disk End Height: 0.055 INCHES NOMINAL IN
  • Material: STEEL COMP 440C OVERALL
  • Style Designator: PLAIN FLANGED
  • Hardness Rating: 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL
  • Flange Diameter: 0.484 INCHES NOMINAL IN
  • Under Flange Height: 0.203 INCHES NOMINAL IN
  • Body Outside Diameter: 0.484 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 440c Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-419-6932, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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
NSN4820-01-419-6932
Primary Part Number30218
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTriumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val
StatusACTIVE
Flange Seat to Disk End Height0.055 INCHES NOMINAL IN
MaterialSTEEL COMP 440C OVERALL
Style DesignatorPLAIN FLANGED
Hardness Rating58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL
Flange Diameter0.484 INCHES NOMINAL IN
Under Flange Height0.203 INCHES NOMINAL IN
Body Outside Diameter0.484 INCHES NOMINAL IN
Body Inside Diameter0.164 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3110-00-156-8218177003-34 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5930-00-371-178030218 INTERCHANGEABLE
Ring,lock
Barksdale, Inc
1650-01-227-070830218 INTERCHANGEABLE
End Cap,valve
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5905-01-271-415630218 INTERCHANGEABLE
Resistor,fixed,film
L & R Manufacturing Company
3110-01-278-833530218 INTERCHANGEABLE
Bearing,roller,tapered
The Timken Corporation
3130-01-649-468030218 INTERCHANGEABLE
Housing,bearing Unit
Generac Mobile Products, Llc
Cross-Reference Index
Part NumberManufacturer
30218 PRIMARY Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val (USA)
Related Parts
3110-00-156-8218INTERCHANGEABLE
BEARING,BALL,ANNULAR
177003-34
5930-00-371-1780INTERCHANGEABLE
RING,LOCK
30218
1650-01-227-0708INTERCHANGEABLE
END CAP,VALVE
30218
5905-01-271-4156INTERCHANGEABLE
RESISTOR,FIXED,FILM
30218
3110-01-278-8335INTERCHANGEABLE
BEARING,ROLLER,TAPERED
30218
3130-01-649-4680INTERCHANGEABLE
HOUSING,BEARING UNIT
30218

Frequently Asked Questions

What is NSN 4820-01-419-6932?

NSN 4820-01-419-6932 is a Seat,valve, manufactured by Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-419-6932?

NSN 4820-01-419-6932 has 1 cross-referenced part number: 30218 (Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val).

What NSN replaces 4820-01-419-6932?

There are 6 known substitutes for 4820-01-419-6932: 3110-00-156-8218, 5930-00-371-1780, 1650-01-227-0708 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 30218?

Key specifications for 30218: Flange Seat to Disk End Height: 0.055 INCHES NOMINAL IN; Material: STEEL COMP 440C OVERALL; Style Designator: PLAIN FLANGED; Hardness Rating: 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL. 9 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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