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NSN 4820-00-555-1221

Velocity Fuse

About this product

Disk flow control device, spring disk loading method, 3568.3 pounds per hour valve discharge flow rate, connection style: plain, optional en (pipe) 2nd end.

Manufacturer part number 1227 for national stock number 4820005551221.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-00-555-1221.

  • MPN or Model

    1227

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Thread Direction
    Right-hand 1st end
  • Flow Control Device
    Disk
  • Disk Loading Method
    Spring
  • Valve Discharge Flow Rate
    3568.3 pounds per hour
  • Maximum Operating Temp
    550.0 degrees fahrenheit single response
  • Connection Style
    Plain, optional en (pipe) 2nd end
  • Valve Operation Method
    Manual
  • Connection Type
    Threaded internal pipe 2nd end
  • Adjustable Pressure Range
    +1.0/+250.0 pounds per square inch
  • Maximum Operating Pressure
    250.0 pounds per square inch single response
  • Thread Size
    0.500 inches 2nd end
  • Opening Pressure Setting
    75.0 pounds per square inch
  • Material
    Copper alloy body
  • Media For Which Designed
    Air single response
  • Style Designator
    Angle
  • Thread Series Designator
    Npt 1st end
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 4820005551221

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
1227 Lunkenheimer Co
1227-3/8 Lunkenheimer Co
1227 Lunkenheimer Co
1227-3/8 Lunkenheimer Co
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