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NSN 4820-00-139-0381

Velocity Fuse

About this product

Ball flow control device, spring disk loading method, pressed-in renewable seat ring type, connection style: flared (tube) 1st end.

Manufacturer part number 4P138-3 for national stock number 4820001390381.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-00-139-0381.

  • MPN or Model

    4P138-3

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    051080 - Faucets, Bibcocks, Gates Valves
  • Unit Weight (Est.)
    0.2 lb
  • Thread Class
    3a 1st end
  • Thread Direction
    Right-hand 1st end
  • Flow Control Device
    Ball
  • Disk Loading Method
    Spring
  • Renewable Seat Ring Type
    Pressed-in
  • Connection Style
    Flared (tube) 1st end
  • Valve Operation Method
    Automatic
  • Connection Type
    Threaded external tube 1st end
  • Features Provided
    Pressure tight outlet side
  • Thready Qty Per Inch (tpi)
    20 1st end
  • Adjustable Pressure Range
    +100.0 to 120.0 pounds per square inch
  • Thread Size
    0.437 inches 1st end
  • Seat Angle
    37.0 degrees 1st end
  • Outside Diameter Tube Accommodated
    0.250 inches 1st end
  • Material
    Steel comp 303 seat
  • Material Specification
    Qq-s-764 federal specification single material response seat
  • Style Designator
    Err-090
  • Thread Series Designator
    Unf 1st end
More from these suppliers
Safety Relief Valve

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes valve (1), relief, pressure and temperature.

Mechanic Bill explains Velocity Fuse

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NSN 4820001390381

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
4P138-3 Allen Aircraft Products Inc
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