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NSN 4820-01-501-7806

Velocity Fuse

About this product

Seal material is buna-n syn rubber.

Manufacturer part number D559T-8D-55 for national stock number 4820015017806.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-01-501-7806.

  • MPN or Model

    D559T-8D-55

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Thread Class
    2a all ends
  • Thread Direction
    Right-hand all ends
  • Flow Control Device
    Poppet
  • Disk Loading Method
    Spring
  • Renewable Seat Ring Type
    Pressed-in
  • Maximum Operating Temp
    250.0 degrees fahrenheit single response
  • Minimum Operating Temp
    -40.0 degrees fahrenheit
  • Connection Style
    G50 external seat for gasket seal (boss) all ends
  • Valve Operation Method
    Automatic
  • Connection Type
    Threaded external boss all ends
  • Thread Size
    0.750 inches all ends
  • Opening Pressure Setting
    55.0 pounds per square inch
  • Material
    Stainless steel
  • Media For Which Designed
    Steam single response
  • Style Designator
    Err-090
  • Thread Series Designator
    Unf all ends
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 4820015017806

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
D559T-8D-55 Circor Aerospace, Inc.
3240789 Naval Sea Systems Command
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