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
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Product description
Safety Relief Valve NSN 4820-00-203-8030.
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MPN or Model
D4729
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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
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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](/public/images/billy-thinking.png)
Pricing and Availability
Get a quote for 4820-00-203-8030 safety relief valveManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
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D4729 | Lunkenheimer Co |
Stock Check
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