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NSN 4820-01-075-3494

Valve Seat Insert

About this product

1.562 inches flange diameter, 1.000 inches body inside diameter, 0.375 inches under flange height, seat angle in deg: 45.000 .

Manufacturer part number 803-21779-5XX-1 for national stock number 4820010753494.

Datasheet

  • Product description

    Valve Seat NSN 4820-01-075-3494.

  • MPN or Model

    803-21779-5XX-1

  • 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.)
    0.3 lb
  • Thread Class
    3a single threaded portion
  • Err Default
    0.359 inches single threaded portion
  • Flange Diameter
    1.562 inches
  • Body Inside Diameter
    1.000 inches
  • Under Flange Height
    0.375 inches
  • Seat Angle In Deg
    45.000
  • Thready Qty Per Inch (tpi)
    20 single threaded portion
  • Thread Size
    1.375 inches single threaded portion
  • Seating Surface Shape
    Angular
  • Material
    Nickel alloy a or nickel alloy b
  • Material Specification
    Qq-n-281 federal specification 1st material response or qq-n-288 federal specification 2nd material response
  • Style Designator
    Threaded flanged
  • Thread Series Designator
    Uns single threaded portion
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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 4820010753494

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
803-21779-5XX-1 Naval Sea Systems Command
803-2177934-5XX Naval Sea Systems Command
803-2177934-5XX Naval Ship Systems Command
803-2177934-X4XXX5XX-19 Naval Ship Systems Command
803-2177934-556-19 Naval Ship Systems Command
803-2177934-X4XX-19 Naval Ship Systems Command
803-2177934 Naval Ship Systems Command
803-2177934-X4XX/X5XX-19 Naval Sea Systems Command
803-2177934-4XX-19 Naval Sea Systems Command
803-2177934-X4XX1X5XX-19 Naval Ship Systems Command
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