NSN 4820-01-131-3145

Valve Seat Insert

About this product

0.719 inches flange diameter, between 0.505 inches and 0.507 inches body inside diameter, between 0.341 inches and 0.342 inches flange seat to disk end height, under flange height: 0.238 inches .

Manufacturer part number 2553-69-279 3-4 for national stock number 4820011313145.


  • Product description

    Valve Seat NSN 4820-01-131-3145.

  • MPN or Model

    2553-69-279 3-4

  • Schedule B
    8481.90.9090 (Parts of taps, cocks, valves and similar appliances, nesoi)
  • NMF (National Motor Freight)
    051080 - Faucets, Bibcocks, Gates Valves
  • Unit Weight (Est.)
    0.1 lb
  • Flange Diameter
    0.719 inches
  • Body Outside Diameter
    Between 0.582 inches and 0.587 inches
  • Body Inside Diameter
    Between 0.505 inches and 0.507 inches
  • Flange Seat To Disk End Height
    Between 0.341 inches and 0.342 inches
  • Under Flange Height
    0.238 inches
  • Seat Angle In Deg
  • Seating Surface Shape
  • Material
  • Style Designator
    Plain flanged
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 4820011313145

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
2553-69-279 3-4 Velan Valve Corporation
23399 ITEM 5 Velan Valve Corporation
2553-69-279 1-2IN Velan Valve Corporation
23399 Velan Valve Corporation
Stock Check
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