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NSN 4820-00-420-8445

Valve Seat Insert

About this product

Between 0.185 inches and 0.195 inches flange diameter, between 0.066 inches and 0.070 inches body inside diameter, between 0.085 inches and 0.090 inches flange seat to disk end height, under flange height: between 0.058 inches and 0.063 inches .

Manufacturer part number 1719 for national stock number 4820004208445.

Datasheet

  • Product description

    Valve Seat NSN 4820-00-420-8445.

  • MPN or Model

    1719

  • Schedule B
    8481.90.9090 (Parts of taps, cocks, valves and similar appliances, nesoi)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Unit Weight (Est.)
    0.3 lb
  • Flange Diameter
    Between 0.185 inches and 0.195 inches
  • Body Outside Diameter
    Between 0.154 inches and 0.157 inches
  • Body Inside Diameter
    Between 0.066 inches and 0.070 inches
  • End Application
    16508789158, a-7d
  • Flange Seat To Disk End Height
    Between 0.085 inches and 0.090 inches
  • Under Flange Height
    Between 0.058 inches and 0.063 inches
  • Seal Accommodation Type
    Recessed
  • Hardness Rating
    56.0 rockwell c and 60.0 rockwell c
  • Seating Surface Shape
    Flat
  • Material
    Steel comp 440c
  • Material Specification
    Ams5630 assn standard all material responses
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Mil-f-14072 military specification all treatment responses
  • Style Designator
    Plain flanged
  • Fsc Application Data
    Aircraft hydraulic system
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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 4820004208445

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
1719 Droitcour Company
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