NSN 4820-00-412-4291
Velocity Fuse
About this product
Poppet flow control device, inside spring bonnet type, integral bonnet attachment method, disk loading method: spring.
Manufacturer part number D520A4D125 for national stock number 4820004124291.
Datasheet
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Product description
Safety Relief Valve NSN 4820-00-412-4291.
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MPN or Model
D520A4D125
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Schedule B
8481.40.0000 (Safety or relief valves) -
NMF (National Motor Freight)
127220 - Pressure Reg/red/relief Valves NOI -
Thread Class
3a 1st end -
Thread Direction
Right-hand 1st end -
Flow Control Device
Poppet -
Bonnet Type
Inside spring -
Bonnet Attachment Method
Integral -
Disk Loading Method
Spring -
Maximum Operating Temp
400.0 degrees fahrenheit single response -
Minimum Operating Temp
-100.0 degrees fahrenheit -
Connection Style
Flared (tube) all ends -
Valve Operation Method
Automatic -
Connection Type
Threaded external tube all ends -
Features Provided
Pressure tight outlet side -
Thready Qty Per Inch (tpi)
20 1st end -
Adjustable Pressure Range
+60.0/+150.0 pounds per square inch -
Maximum Operating Pressure
200.0 pounds per square inch single response -
Thread Size
0.437 inches 1st end -
Seat Angle
37.0 degrees all ends -
Opening Pressure Setting
125.0 pounds per square inch -
Outside Diameter Tube Accommodated
0.250 inches 1st end -
Material
Plastic polytetrafluoroethylene seat -
Media For Which Designed
Water-oil-gas single response -
Surface Treatment
Anodize -
Surface Treatment Specification
Mil-a-86251 military specification single treatment response -
Style Designator
Straight through w/baffle -
Thread Series Designator
Unjf all ends -
Furnished Items And Quantity
1 deflector cap
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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 4820-00-412-4291 safety relief valveManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
---|---|
D520A4D125 | Circor Aerospace, Inc. |
GV500KF4D125D | Northrop Grumman Systems Corporation |
Stock Check
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