NSN 4820-00-839-4188
Velocity Fuse
About this product
Pop-off type.
Manufacturer part number 559B-2M-4 for national stock number 4820008394188.
Datasheet
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Product description
Safety Relief Valve NSN 4820-00-839-4188.
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MPN or Model
559B-2M-4
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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.)
0.1 lb -
Thread Direction
Right-hand all ends -
Flow Control Device
Poppet -
Disk Loading Method
Spring -
Valve Discharge Flow Rate
1.0 cubic feet per minute -
Maximum Operating Temp
250.0 degrees fahrenheit single response -
Connection Style
G46b plain (pipe) all ends -
Valve Operation Method
Automatic -
Connection Type
Threaded external pipe all ends -
Features Provided
Pressure tight outlet side -
Adjustable Pressure Range
+2.5/+5.9 pounds per square inch -
Maximum Operating Pressure
200.0 pounds per square inch single response -
Thread Size
0.250 inches all ends -
Opening Pressure Setting
4.0 pounds per square inch -
Material
Copper alloy -
Media For Which Designed
Hydrogen 5th response -
Style Designator
Err-090 -
Thread Series Designator
Npt all ends
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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 4820-00-839-4188 safety relief valveManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
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559B-2M-4 | Circor Aerospace, Inc. |
412732-2 | Raytheon Company |
Stock Check
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