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NSN 4820-00-408-2781

Valve Seat Insert

About this product

Between 0.374 inches and 0.375 inches flange diameter, between 0.068 inches and 0.069 inches body inside diameter, between 0.040 inches and 0.042 inches seat radius, flange seat to disk end height: between 0.069 inches and 0.071 inches .

Manufacturer part number 2826124-3 for national stock number 4820004082781.

Datasheet

  • Product description

    Valve Seat NSN 4820-00-408-2781.

  • MPN or Model

    2826124-3

  • Schedule B
    8481.90.9090 (Parts of taps, cocks, valves and similar appliances, nesoi)
  • NMF (National Motor Freight)
    114820 - Bearings/bushings NOI Ball/roller
  • Flange Diameter
    Between 0.374 inches and 0.375 inches
  • Body Outside Diameter
    Between 0.249 inches and 0.250 inches
  • Body Inside Diameter
    Between 0.068 inches and 0.069 inches
  • Seat Radius
    Between 0.040 inches and 0.042 inches
  • Flange Seat To Disk End Height
    Between 0.069 inches and 0.071 inches
  • Under Flange Height
    Between 0.119 inches and 0.121 inches
  • Hardness Rating
    50.0 rockwell c and 54.0 rockwell c
  • Seating Surface Shape
    Radial
  • Material
    Steel comp 440c
  • Material Specification
    Qq-s-763, class 440c federal specification single material response
  • Surface Treatment
    Passivate
  • Style Designator
    Plain flanged
  • Fsc Application Data
    Valve, hydraulic steeringaircraft
Valve Seat

A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.

Mechanic Bill explains Valve Seat Insert

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NSN 4820004082781

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
2826124-3 Triumph Actuation Systems -
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