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NSN 4820-00-287-3139

Velocity Fuse

About this product

W/lifting lever and inconel spring.

Manufacturer part number 1990T-1/2X1-36-50PSI for national stock number 4820002873139.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-00-287-3139.

  • MPN or Model

    1990T-1/2X1-36-50PSI

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Pipe Size Accommodated
    1.000 inches 1st end
  • Flow Control Device
    Disk
  • Disk Loading Method
    Spring
  • Valve Discharge Flow Rate
    93.0 pounds per hour
  • Maximum Operating Temp
    800.0 degrees fahrenheit single response
  • Minimum Operating Temp
    401.0 degrees fahrenheit
  • Connection Style
    Socket err-100
  • Valve Operation Method
    Automatic
  • Connection Type
    Unthreaded internal pipe all ends
  • Adjustable Pressure Range
    +33.0/+55.0 pounds per square inch
  • Maximum Operating Pressure
    2000.0 pounds per square inch single response
  • Opening Pressure Setting
    50.0 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
    Steam single response
  • Style Designator
    Angle
  • Nondefinitive Specification/std Data
    A-1 type and c class
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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 4820002873139

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
1990T-1/2X1-36-50PSI Dresser, Inc.
1990 Dresser, Inc.
1990T-1/21 35-50PSI Dresser, Inc.
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