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NSN 4820-01-121-8057

Velocity Fuse

About this product

Disk flow control device, inside spring bonnet type, bolted bonnet attachment method, disk loading method: spring.

Manufacturer part number 1511-H for national stock number 4820011218057.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-01-121-8057.

  • MPN or Model

    1511-H

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • Thread Direction
    Right-hand 1st end
  • Flow Control Device
    Disk
  • Bonnet Type
    Inside spring
  • Bonnet Attachment Method
    Bolted
  • Disk Loading Method
    Spring
  • Bolt Hole Quantity
    4 2nd end
  • Maximum Operating Temp
    450.0 degrees fahrenheit single response
  • End Application
    Heating system onboard 270 ft wmec cg vessels
  • Connection Style
    Plain, optional en (pipe) 1st end
  • Valve Operation Method
    Automatic
  • Flange Shape
    Round with holes 2nd end
  • Connection Type
    Threaded internal pipe 1st end
  • Valve Size
    2.500 inches
  • Maximum Operating Pressure
    30.0 pounds per square inch single response
  • Thread Size
    2.500 inches 1st end
  • Outside Diameter
    6.125 inches 2nd end
  • Thickness
    0.812 inches 2nd end
  • First Connection Face To Centerline Distance
    4.000 inches
  • Bolt Hole Diameter
    0.750 inches 2nd end
  • Second Connection Face To Centerline Distance
    4.250 inches
  • Bolt Circle Diameter
    4.500 inches 2nd end
  • Flange Face Design
    Raised straight 2nd end
  • Raised Face Height
    0.062 inches 2nd end
  • Raised Face Diameter
    3.562 inches 2nd end
  • Material
    Iron cast body
  • Style Designator
    Angle flanged ends
  • Thread Series Designator
    Npt 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 4820011218057

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
1511-H Dresser, Inc.
3VP953-H Komdresco Canada Inc
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