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NSN 4820-01-442-9943

Valve Seat Insert

About this product

1.555 inches flange diameter, 0.153 inches flange seat to disk end height, 20 single threaded portion thready qty per inch (tpi), criticality code justification: zzzy.

Manufacturer part number 803-6397434-X4XXXX-049 for national stock number 4820014429943.

Datasheet

  • Product description

    Valve Seat NSN 4820-01-442-9943.

  • MPN or Model

    803-6397434-X4XXXX-049

  • Schedule B
    8481.90.9090 (Parts of taps, cocks, valves and similar appliances, nesoi)
  • NMF (National Motor Freight)
    051080 - Faucets, Bibcocks, Gates Valves
  • Thread Class
    3a single threaded portion
  • Flange Diameter
    1.555 inches
  • Flange Seat To Disk End Height
    0.153 inches
  • Thready Qty Per Inch (tpi)
    20 single threaded portion
  • Thread Size
    1.375 inches single threaded portion
  • Criticality Code Justification
    Zzzy
  • Material
    Cobalt comp 1
  • Material Specification
    Mil-c-24252 military specification single material response
  • Style Designator
    Threaded flanged
  • Thread Series Designator
    Un single threaded portion
  • Reference Number Differentiating Characteristics
    Material controlled iaw navsea 0948-lp-045-7010 material control standard for level i items
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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 4820014429943

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
803-6397434-X4XXXX-049 Naval Sea Systems Command
CD-023-20-49 Naval Sea Systems Command
CD-023-20-49L1 Naval Inventory Control Point
803-6397434-X4XXXX-049L1 Naval Inventory Control Point
6397434-4-049L1 Naval Inventory Control Point
7383858-6397434-4-049L1 Naval Inventory Control Point
7550478-6397434-4-049L1 Naval Inventory Control Point
803-6397434-X41XXX-049L1 Naval Inventory Control Point
G547-0002-6397434-4-049L1 Naval Inventory Control Point
H547-0001-6397434-4-049L1 Naval Inventory Control Point
7550478-6397434-4-049 Naval Sea Systems Command
Stock Check
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