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NSN 4820-00-155-7681

Velocity Fuse

About this product

Poppet flow control device, inside screw bonnet type, integral bonnet attachment method, disk loading method: spring.

Manufacturer part number 5120T12TB30 for national stock number 4820001557681.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-00-155-7681.

  • MPN or Model

    5120T12TB30

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Thread Class
    3b 2nd 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
    450.0 degrees fahrenheit single response
  • Connection Style
    Gasket sea (boss) 2nd end
  • Valve Operation Method
    Automatic
  • Connection Type
    Threaded internal boss 2nd end
  • Features Provided
    Pressure tight outlet side
  • Thready Qty Per Inch (tpi)
    12 2nd end
  • Thread Size
    1.062 inches 2nd end
  • Seat Angle
    37.0 degrees 1st end
  • Opening Pressure Setting
    30.0 pounds per square inch
  • Outside Diameter Tube Accommodated
    0.750 inches 2nd end
  • Material
    Steel comp 303
  • Material Specification
    Fedstd66, aisi303/sae30303 federal standard all material responses
  • Media For Which Designed
    Water-oil-gas single response
  • Style Designator
    Err-090
  • Thread Series Designator
    Unj 2nd 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 4820001557681

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
5120T12TB30 Circor Aerospace, Inc.
Stock Check
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