NSN 4820-00-776-0690
Velocity Fuse
About this product
Poppet flow control device, spring disk loading method, plain (pipe) 1st endplain, optional en (pipe) 2nd end connection style, valve operation method: automatic.
Manufacturer part number 5159B-8MP-120 for national stock number 4820007760690.
Datasheet
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Product description
Safety Relief Valve NSN 4820-00-776-0690.
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MPN or Model
5159B-8MP-120
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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.)
1.7 lb -
Thread Direction
Right-hand 1st end -
Flow Control Device
Poppet -
Disk Loading Method
Spring -
Maximum Operating Temp
250.0 degrees fahrenheit single response -
Connection Style
Plain (pipe) 1st endplain, optional en (pipe) 2nd end -
Valve Operation Method
Automatic -
Connection Type
Threaded external pipe 1st endthreaded internal pipe 2nd end -
Features Provided
Pressure tight outlet side -
Maximum Operating Pressure
2500.0 pounds per square inch single response -
Thread Size
1.000 inches 2nd end -
Opening Pressure Setting
120.0 pounds per square inch -
Material
Copper alloy -
Media For Which Designed
Hydrogen 5th response -
Style Designator
Straight through note: to be used for valve bodies of separable sections. -
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 4820-00-776-0690 safety relief valveManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
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5159B-8MP-120 | Circor Aerospace, Inc. |
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