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NSN 4820-01-321-1790

Velocity Fuse

About this product

0.750 inches 2nd end pipe size accommodated, disk flow control device, inside screw bonnet type, bonnet attachment method: threaded.

Manufacturer part number NMP121-3/4IN-L2 for national stock number 4820013211790.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-01-321-1790.

  • MPN or Model

    NMP121-3/4IN-L2

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Pipe Size Accommodated
    0.750 inches 2nd end
  • Flow Control Device
    Disk
  • Bonnet Type
    Inside screw
  • Bonnet Attachment Method
    Threaded
  • Bolt Hole Quantity
    4 1st end
  • Maximum Operating Temp
    425.0 degrees fahrenheit 2nd response
  • Connection Style
    Socket err-100
  • Valve Operation Method
    Automatic
  • Flange Shape
    Round with holes 1st end
  • Connection Type
    Unthreaded internal pipe 2nd end
  • Maximum Operating Pressure
    400.0 pounds per square inch 1st response
  • Opening Pressure Setting
    200.0 pounds per square inch
  • Outside Diameter
    4.312 inches 1st end
  • Thickness
    0.688 inches 1st end
  • Bolt Hole Diameter
    0.562 inches 1st end
  • Bolt Circle Diameter
    3.188 inches 1st end
  • Flange Face Design
    Plain 1st end
  • Material
    Nickel alloy seat
  • Media For Which Designed
    Air 1st response
  • Style Designator
    Err-090
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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 4820013211790

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NMP121-3/4IN-L2 Kunkle Industries Inc
NMP121-3/4IN-L2122C-200 PSI Pentair Valves & Controls Us Lp
NMP121-3/4IN-L2122C-200 PSI Kunkle Industries Inc
NMP121-3/4IN-L2122C-200 PSI Anderson Greenwood Lp
Stock Check
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