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NSN 4820-00-420-5485

Velocity Fuse

About this product

Poppet flow control device, spring disk loading method, external seat for gasket seal (boss) 1st end connection style, valve operation method: automatic.

Manufacturer part number D537A4D25 for national stock number 4820004205485.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-00-420-5485.

  • MPN or Model

    D537A4D25

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Thread Class
    3a 1st end
  • Thread Direction
    Right-hand 1st end
  • Flow Control Device
    Poppet
  • Disk Loading Method
    Spring
  • Maximum Operating Temp
    250.0 degrees fahrenheit single response
  • Connection Style
    External seat for gasket seal (boss) 1st end
  • Valve Operation Method
    Automatic
  • Connection Type
    Threaded external boss 1st end
  • Adjustable Pressure Range
    +10.0/+30.0 pounds per square inch
  • Maximum Operating Pressure
    200.0 pounds per square inch single response
  • Thread Size
    0.437 inches 1st end
  • Opening Pressure Setting
    25.0 pounds per square inch
  • Outside Diameter Tube Accommodated
    0.250 inches 1st end
  • Material
    Aluminum alloy 2024 seat
  • Material Specification
    Qq-a-225/6, alloy 2024, t4 federal specification single material response seat
  • Media For Which Designed
    Ammonia, gaseous 5th response
  • Surface Treatment
    Anodize
  • Style Designator
    Straight through w/baffle
  • Thread Series Designator
    Unf 1st end
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 4820004205485

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
D537A4D25 Circor Aerospace, Inc.
Stock Check
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