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NSN 4820-01-451-2556

Velocity Fuse

About this product

Carbon steel (phosphated) sring;orifice area 0.110 sq in..

Manufacturer part number 1990C-1 X .75 135PSI for national stock number 4820014512556.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-01-451-2556.

  • MPN or Model

    1990C-1 X .75 135PSI

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Thread Direction
    Right-hand all ends
  • Flow Control Device
    Disk
  • Disk Loading Method
    Spring
  • Maximum Operating Temp
    400.0 degrees fahrenheit single response
  • Minimum Operating Temp
    -20.0 degrees fahrenheit
  • End Application
    Strategic sealift conversion ships class
  • Connection Style
    G9 plain, optional en (pipe) 2nd end
  • Valve Operation Method
    Automatic
  • Connection Type
    Threaded internal pipe 2nd end
  • Maximum Operating Pressure
    2000.0 pounds per square inch single response
  • Thread Size
    1.000 inches 2nd end
  • Opening Pressure Setting
    135.0 pounds per square inch
  • Material
    Steel comp 410 stem
  • Material Specification
    Astm a479 assn standard single material response flow control device
  • Media For Which Designed
    Air 1st response
  • Style Designator
    Err-090
  • Thread Series Designator
    Npt all ends
  • Furnished Items And Quantity
    1 lever
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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 4820014512556

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
1990C-1 X .75 135PSI Dresser, Inc.
1990 Dresser, Inc.
Stock Check
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