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NSN 4820-00-555-0000

Velocity Fuse

About this product

Poppet flow control device, packing retaining bonnet type, spring disk loading method, valve discharge flow rate: 2.5 gallons per minute.

Manufacturer part number 7545956 for national stock number 4820005550000.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-00-555-0000.

  • MPN or Model

    7545956

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Thread Class
    3b all ends
  • Thread Direction
    Right-hand all ends
  • Flow Control Device
    Poppet
  • Bonnet Type
    Packing retaining
  • Disk Loading Method
    Spring
  • Valve Discharge Flow Rate
    2.5 gallons per minute
  • Maximum Operating Temp
    160.0 degrees fahrenheit single response
  • Connection Style
    Gasket sea (boss) all ends
  • Valve Operation Method
    Automatic
  • Connection Type
    Threaded internal boss all ends
  • Features Provided
    Pressure tight outlet side
  • Thready Qty Per Inch (tpi)
    20 all ends
  • Maximum Operating Pressure
    3000.0 pounds per square inch single response
  • Thread Size
    0.437 inches all ends
  • Opening Pressure Setting
    1500.0 pounds per square inch
  • Outside Diameter Tube Accommodated
    0.250 inches all ends
  • Material
    Stainless steel seat
  • Material Specification
    Qq-a-225/6, alloy 2024 federal specification single material response body
  • Media For Which Designed
    Hydraulic fluid, mineral base single response
  • Surface Treatment
    Anodize
  • Style Designator
    Straight thru
  • Thread Series Designator
    Unjf all ends
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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 4820005550000

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
7545956 Boeing Company, The
7545956 Pneudraulics, Inc.
4541-4 Pneudraulics, Inc.
313345-1500 Hydro-aire, Inc.
7545956 Boeing Company, The
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