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NSN 4820-01-344-1622

Velocity Fuse

About this product

1 to 5 psig check pressure.

Manufacturer part number 3R1908 for national stock number 4820013441622.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-01-344-1622.

  • MPN or Model

    3R1908

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • Thread Class
    3a all ends
  • Thread Direction
    Right-hand all ends
  • Flow Control Device
    Disk
  • Maximum Operating Temp
    275.0 degrees fahrenheit single response
  • End Application
    4720-01-290-7430
  • Connection Style
    G45 flareless (tube) all ends
  • Valve Operation Method
    Automatic
  • Connection Type
    Threaded external tube all ends
  • Thready Qty Per Inch (tpi)
    20 all ends
  • Maximum Operating Pressure
    4000.0 pounds per square inch single response
  • Thread Size
    0.438 inches all ends
  • Seat Angle
    24.0 degrees all ends
  • Opening Pressure Setting
    50.0 pounds per square inch
  • Material
    Stainless steel bodystainless steel flow control device
  • Media For Which Designed
    Hydraulic fluid, petroleum base single response
  • Style Designator
    Err-090
  • Thread Series Designator
    Unj all ends
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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 4820013441622

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
3R1908 Crissair, Inc.
7D0290-04 Boeing Company, The
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