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NSN 4820-00-051-5222

Velocity Fuse

About this product

0.250 inches 1st end pipe size accommodated, poppet flow control device, spring disk loading method, connection style: plain (pipe) 1st end.

Manufacturer part number D539A2M18 for national stock number 4820000515222.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-00-051-5222.

  • MPN or Model

    D539A2M18

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • Pipe Size Accommodated
    0.250 inches 1st end
  • Thread Direction
    Right-hand 1st end
  • Flow Control Device
    Poppet
  • Disk Loading Method
    Spring
  • Maximum Operating Temp
    250.0 degrees fahrenheit 4th response
  • Connection Style
    Plain (pipe) 1st end
  • Valve Operation Method
    Manual
  • Connection Type
    Threaded external pipe 1st end
  • Thready Qty Per Inch (tpi)
    18 1st end
  • Maximum Operating Pressure
    200.0 pounds per square inch 4th response
  • Thread Size
    0.250 inches 1st end
  • Opening Pressure Setting
    18.0 pounds per square inch
  • Material
    Aluminum alloy
  • Media For Which Designed
    Ammonia, gaseous 3rd response
  • Style Designator
    Straight thru
  • Thread Series Designator
    Npt 1st end
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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 4820000515222

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
D539A2M18 Circor Aerospace, Inc.
C1058A2D18 Lockheed Martin Corporation
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