1-321-802-5889

NSN 4820-00-203-8030

Velocity Fuse

About this product

Bolt holes in flange to straddle centerlines.

Manufacturer part number D4729 for national stock number 4820002038030.

Datasheet

  • Product description

    Safety Relief Valve NSN 4820-00-203-8030.

  • MPN or Model

    D4729

  • Schedule B
    8481.40.0000 (Safety or relief valves)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Pipe Size Accommodated
    1.500 inches 1st end
  • Thread Direction
    Right-hand 1st end
  • Flow Control Device
    Poppet
  • Bonnet Type
    Exposed spring
  • Bonnet Attachment Method
    Threaded
  • Disk Loading Method
    Spring
  • Renewable Seat Ring Type
    Threaded
  • Bolt Hole Quantity
    4 2nd end
  • Maximum Operating Temp
    425.0 degrees fahrenheit single response
  • Connection Style
    Plain, optional en (pipe) 1st end
  • Valve Operation Method
    Automatic or manual
  • Flange Shape
    Round with holes 2nd end
  • Connection Type
    Threaded internal pipe 1st end
  • Features Provided
    Valve stem lock shield
  • Thready Qty Per Inch (tpi)
    11-1/2 1st end
  • Adjustable Pressure Range
    +7.0/+25.0 pounds per square inch
  • Maximum Operating Pressure
    100.0 pounds per square inch single response
  • Thread Size
    1.500 inches 1st end
  • Outside Diameter
    4.500 inches 2nd end
  • Thickness
    0.438 inches 2nd end
  • First Connection Face To Centerline Distance
    3.062 inches
  • Bolt Hole Diameter
    0.562 inches 2nd end
  • Second Connection Face To Centerline Distance
    2.188 inches
  • Bolt Circle Diameter
    3.375 inches 2nd end
  • Flange Face Design
    Plain 2nd end
  • Material
    Nickel alloy flow control device
  • Media For Which Designed
    Steam single response
  • Style Designator
    Angle flanged ends
  • Thread Series Designator
    Npt 1st end
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

Pricing and Availability

Get a quote for 4820-00-203-8030 safety relief valve
Quantity:
Your Email:
Your Name:
Company Name:
Optional reference:
Phone:
NSN 4820002038030

We do not share, sell, or distribute your information to any third party.
Privacy | Terms

All major credit cards accepted as well as gov. p-cards
Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
D4729 Lunkenheimer Co
Stock Check
Availability of this NSN has not been updated recently. Submit the pricing and availbility form above to receive an up to date quote.