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NSN 4820-00-449-1074

Velocity Fuse

About this product

0.375 inches 1st end pipe size accommodated, poppet flow control device, inside screw bonnet type, bonnet attachment method: integral.

Manufacturer part number D559T-3M-170 for national stock number 4820004491074.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-00-449-1074.

  • MPN or Model

    D559T-3M-170

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Unit Weight (Est.)
    0.1 lb
  • Pipe Size Accommodated
    0.375 inches 1st end
  • Thread Direction
    Right-hand 1st end
  • Flow Control Device
    Poppet
  • Bonnet Type
    Inside screw
  • Bonnet Attachment Method
    Integral
  • Disk Loading Method
    Spring
  • Maximum Operating Temp
    -40.0 degrees fahrenheit 1st response250.0 degrees fahrenheit 2nd response
  • Connection Style
    Plain (pipe) 1st end
  • Valve Operation Method
    Automatic
  • Connection Type
    Threaded external pipe 1st end
  • Adjustable Pressure Range
    +0.0/+200.0 pounds per square inch
  • Maximum Operating Pressure
    200.0 pounds per square inch single response
  • Thread Size
    0.375 inches 1st end
  • Opening Pressure Setting
    170.0 pounds per square inch
  • Material
    Steel comp 303
  • Material Specification
    66 federal standard single material response
  • Media For Which Designed
    Hydrogen 5th response
  • Style Designator
    Straight through w/baffle
  • Thread Series Designator
    Npt 1st end
  • Furnished Items And Quantity
    1 deflector cap
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 4820004491074

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
D559T-3M-170 Circor Aerospace, Inc.
2132707-2 Honeywell Intl Inc Defense Avionics
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