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NSN 4820-00-312-6351

Valve Seat Insert

About this product

Between 1.407 inches and 1.408 inches flange diameter, between 0.725 inches and 0.731 inches body inside diameter, between 0.165 inches and 0.171 inches seat radius, flange seat to disk end height: between 0.498 inches and 0.502 inches .

Manufacturer part number 125D257ABPC13 for national stock number 4820003126351.

Datasheet

  • Product description

    Valve Seat NSN 4820-00-312-6351.

  • MPN or Model

    125D257ABPC13

  • Schedule B
    8481.90.9090 (Parts of taps, cocks, valves and similar appliances, nesoi)
  • NMF (National Motor Freight)
    051080 - Faucets, Bibcocks, Gates Valves
  • Flange Diameter
    Between 1.407 inches and 1.408 inches
  • Body Outside Diameter
    Between 1.028 inches and 1.029 inches
  • Body Inside Diameter
    Between 0.725 inches and 0.731 inches
  • Seat Radius
    Between 0.165 inches and 0.171 inches
  • Flange Seat To Disk End Height
    Between 0.498 inches and 0.502 inches
  • Under Flange Height
    0.616 inches
  • Seating Surface Shape
    Radial
  • Material
    Steel body
  • Material Specification
    Qq-s-624, comp 4140 federal specification single material response body
  • Style Designator
    Plain flanged
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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 4820003126351

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
125D257ABPC13 General Electric Co
101B354AB General Electric Co
101B354AB General Electric Co
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