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NSN 4820-01-011-6579

Velocity Fuse

About this product

Poppet flow control device, spring disk loading method, 2.5 gallons per minute valve discharge flow rate, connection style: g42 flared (tube) all ends.

Manufacturer part number 649XB2-4-2 for national stock number 4820010116579.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-01-011-6579.

  • MPN or Model

    649XB2-4-2

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Unit Weight (Est.)
    0.6 lb
  • Thread Class
    3a all ends
  • Thread Direction
    Right-hand all ends
  • Flow Control Device
    Poppet
  • Disk Loading Method
    Spring
  • Valve Discharge Flow Rate
    2.5 gallons per minute
  • Maximum Operating Temp
    225.0 degrees fahrenheit single response
  • Connection Style
    G42 flared (tube) all ends
  • Valve Operation Method
    Automatic
  • Connection Type
    Threaded external tube all ends
  • Adjustable Pressure Range
    +10.0/+50.0 pounds per square inch
  • Maximum Operating Pressure
    50.0 pounds per square inch single response
  • Thread Size
    0.438 inches all ends
  • Seat Angle
    37.0 degrees all ends
  • Opening Pressure Setting
    35.0 pounds per square inch
  • Outside Diameter Tube Accommodated
    0.250 inches all ends
  • Material
    Steel comp 303 flow control device
  • Material Specification
    Fed standard 66, aisi 303/sae 30303 federal standard single material response flow control device
  • Media For Which Designed
    Fuel/oil, hydrocarbon 1st response
  • Surface Treatment
    Passivate
  • Style Designator
    Err-090
  • Thread Series Designator
    Unjf all ends
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 4820010116579

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
649XB2-4-2 Teledyne Industries Inc
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