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NSN 4820-01-145-6205

Velocity Fuse

About this product

Disk flow control device, 4 2nd end bolt holes, automatic valve operation method, flange shape: round with holes 2nd end.

Manufacturer part number 1811GB for national stock number 4820011456205.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-01-145-6205.

  • MPN or Model

    1811GB

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • Flow Control Device
    Disk
  • Bolt Hole Quantity
    4 2nd end
  • End Application
    Boiler pressure 509s-4pc onboard 378 ft whec coast guard vessels
  • Valve Operation Method
    Automatic
  • Flange Shape
    Round with holes 2nd end
  • Connection Type
    Flange 1st end
  • Mounting Facility
    Bracket
  • Valve Size
    1.500 inches
  • Opening Pressure Setting
    150.0 pounds per square inch
  • Outside Diameter
    5.250 inches 1st end
  • Thickness
    0.562 inches 2nd end
  • First Connection Face To Centerline Distance
    4.188 inches
  • Bolt Hole Diameter
    0.625 inches 1st end
  • Second Connection Face To Centerline Distance
    4.406 inches
  • Bolt Circle Diameter
    3.875 inches 2nd end
  • Flange Face Design
    Plain 2nd end
  • Material
    Steel
  • 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 4820011456205

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
1811GB Dresser, Inc.
1811GA Dresser, Inc.
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