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NSN 4820-01-505-5925

Valve Seat Insert

About this product

45.000 seat angle in deg, 20 single threaded portion thready qty per inch (tpi), angular seating surface shape, material: nickel alloy seat.

Manufacturer part number 803-4384536-41A-85 for national stock number 4820015055925.

Datasheet

  • Product description

    Valve Seat NSN 4820-01-505-5925.

  • MPN or Model

    803-4384536-41A-85

  • Schedule B
    8481.90.9090 (Parts of taps, cocks, valves and similar appliances, nesoi)
  • NMF (National Motor Freight)
    127200 - Pressure Redcng Water Relief Valve
  • Thread Class
    3a single threaded portion
  • Thread Length
    0.1719 inches single threaded portion
  • Seat Angle In Deg
    45.000
  • Thready Qty Per Inch (tpi)
    20 single threaded portion
  • Thread Size
    1.1875 inches single threaded portion
  • Seating Surface Shape
    Angular
  • Material
    Nickel alloy seat
  • Material Specification
    Astm b164 assn standard single material response seat or astm a494 gr. -30c assn standard single material response seat
  • Thread Series Designator
    Un 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 4820015055925

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
803-4384536-41A-85 Naval Sea Systems Command
803-4384536 PC NO 85 Naval Sea Systems Command
4384536 Naval Ship Systems Command
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