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NSN 4820-00-821-9001

Velocity Fuse

About this product

0.250 inches 1st end pipe size accommodated, poppet flow control device, spring disk loading method, valve discharge flow rate: 33.0 cubic feet per minute.

Manufacturer part number 1664 for national stock number 4820008219001.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-00-821-9001.

  • MPN or Model

    1664

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Pipe Size Accommodated
    0.250 inches 1st end
  • Thread Direction
    Right-hand 1st end
  • Flow Control Device
    Poppet
  • Disk Loading Method
    Spring
  • Valve Discharge Flow Rate
    33.0 cubic feet per minute
  • Maximum Operating Temp
    450.0 degrees fahrenheit 1st response
  • Connection Style
    G9 plain, optional en (pipe) 1st end
  • Valve Operation Method
    Automatic
  • Connection Type
    Threaded internal pipe 1st end
  • Features Provided
    Pressure tight outlet side
  • Thready Qty Per Inch (tpi)
    18 1st end
  • Maximum Operating Pressure
    275.0 pounds per square inch 2nd response
  • Thread Size
    0.250 inches 1st end
  • Opening Pressure Setting
    30.0 pounds per square inch
  • Material
    Copper alloy body
  • Media For Which Designed
    Gas, inert 2nd response
  • Style Designator
    Err-090
  • Thread Series Designator
    Npt 1st end
  • Reference Number Differentiating Characteristics
    As differentiated by valve size and set pressure
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 4820008219001

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
1664 Ashcroft Inc.
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