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NSN 4820-01-218-4611

Velocity Fuse

About this product

Poppet flow control device, spring disk loading method, -40.0 degrees fahrenheit minimum operating temp, connection style: g42 flared (tube) all ends.

Manufacturer part number D559A-4D-1 for national stock number 4820012184611.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-01-218-4611.

  • MPN or Model

    D559A-4D-1

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    051080 - Faucets, Bibcocks, Gates Valves
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
    3a all ends
  • Thread Direction
    Right-hand all ends
  • Flow Control Device
    Poppet
  • Disk Loading Method
    Spring
  • Maximum Operating Temp
    280.0 degrees fahrenheit single response
  • Minimum Operating Temp
    -40.0 degrees fahrenheit
  • Connection Style
    G42 flared (tube) all ends
  • Valve Operation Method
    Automatic
  • Connection Type
    Threaded external tube all ends
  • Thready Qty Per Inch (tpi)
    20 all ends
  • Adjustable Pressure Range
    +0.5/+2.5 pounds per square inch
  • Maximum Operating Pressure
    200.0 pounds per square inch single response
  • Thread Size
    0.438 inches all ends
  • Seat Angle
    37.0 degrees all ends
  • Material
    Rubber synthetic packing
  • Material Specification
    Mil-p-25732 military specification single material response packing
  • Media For Which Designed
    Hydrogen 4th response
  • Style Designator
    Err-090
  • Thread Series Designator
    Unjf all ends
  • Furnished Items And Quantity
    1 deflector cap
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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 4820012184611

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
D559A-4D-1 Circor Aerospace, Inc.
Z02RD04A010B Zevco Inc
D559A-4D-1 Circor Aerospace, Inc.
Z02RD04A010B Zevco Inc
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