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NSN 4820-00-887-8539

Velocity Fuse

About this product

Poppet flow control device, spring disk loading method, 10.0 cubic feet per minute valve discharge flow rate, connection style: g9 plain, optional en (pipe) all ends.

Manufacturer part number 640B-7-8-2 for national stock number 4820008878539.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-00-887-8539.

  • MPN or Model

    640B-7-8-2

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
    2b all ends
  • Thread Direction
    Right-hand all ends
  • Flow Control Device
    Poppet
  • Disk Loading Method
    Spring
  • Valve Discharge Flow Rate
    10.0 cubic feet per minute
  • Connection Style
    G9 plain, optional en (pipe) all ends
  • Valve Operation Method
    Automatic
  • Connection Type
    Threaded internal pipe all ends
  • Features Provided
    Pressure tight outlet side and valve stem lock shield
  • Thread Size
    0.750 inches all ends
  • Opening Pressure Setting
    750.0 pounds per square inch
  • Material
    Steel body
  • 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 4820008878539

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
640B-7-8-2 Parker-hannifin Corporation
640B-7-8-2 Teledyne Industries Inc
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