NSN 4820-00-491-4994
Velocity Fuse
About this product
Poppet flow control device, spring disk loading method, plain (pipe) 1st end connection style, valve operation method: automatic.
Manufacturer part number 520T-2M-20 for national stock number 4820004914994.
Datasheet
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Product description
Safety Relief Valve NSN 4820-00-491-4994.
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MPN or Model
520T-2M-20
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Schedule B
8481.40.0000 (Safety or relief valves) -
NMF (National Motor Freight)
127220 - Pressure Reg/red/relief Valves NOI -
Unit Weight (Est.)
0.4 lb -
Thread Direction
Right-hand 1st end -
Flow Control Device
Poppet -
Disk Loading Method
Spring -
Maximum Operating Temp
450.0 degrees fahrenheit 2nd response -
Connection Style
Plain (pipe) 1st end -
Valve Operation Method
Automatic -
Connection Type
Threaded external pipe 1st end -
Thready Qty Per Inch (tpi)
27 1st end -
Adjustable Pressure Range
+0.0/+200.0 pounds per square inch -
Maximum Operating Pressure
200.0 pounds per square inch single response -
Thread Size
0.250 inches 1st end -
Opening Pressure Setting
20.0 pounds per square inch -
Material
Steel comp 303 -
Material Specification
66 federal standard single material response -
Media For Which Designed
Water-oil-gas single response -
Style Designator
Straight thru -
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 4820-00-491-4994 safety relief valveManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
---|---|
520T-2M-20 | Circor Aerospace, Inc. |
532066-2 | Raytheon Company |
Stock Check
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