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NSN 4820-00-068-1017

Velocity Fuse

About this product

Poppet flow control device, spring disk loading method, flared (tube) all ends connection style, valve operation method: automatic.

Manufacturer part number D559T-8D-28 for national stock number 4820000681017.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-00-068-1017.

  • MPN or Model

    D559T-8D-28

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Unit Weight (Est.)
    0.2 lb
  • Thread Class
    3a all ends
  • Thread Direction
    Right-hand all ends
  • Flow Control Device
    Poppet
  • Disk Loading Method
    Spring
  • Maximum Operating Temp
    -40.0 degrees fahrenheit 1st response280.0 degrees fahrenheit 2nd response
  • Connection Style
    Flared (tube) all ends
  • Valve Operation Method
    Automatic
  • Connection Type
    Threaded external tube all ends
  • Features Provided
    Valve stem lock shield
  • Adjustable Pressure Range
    +25.0 to 75.0 pounds per square inch
  • Maximum Operating Pressure
    200.0 pounds per square inch single response
  • Thread Size
    0.750 inches all ends
  • Seat Angle
    37.0 degrees all ends
  • Opening Pressure Setting
    28.0 pounds per square inch
  • Outside Diameter Tube Accommodated
    0.500 inches all ends
  • Material
    Steel comp 303 stem
  • Material Specification
    Fedstd66, aisi303/sae30303 federal standard single material response body
  • Media For Which Designed
    Helium 5th response
  • Style Designator
    Straight thru
  • Thread Series Designator
    Unjf all ends
  • Furnished Items And Quantity
    1 deflector cap
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 4820000681017

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
D559T-8D-28 Circor Aerospace, Inc.
26-15768-1 The Boeing Company
26-15768-1 Boeing Company, The
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