NSN 4820-01-338-2023
Velocity Fuse
About this product
Poppet flow control device, spring disk loading method, g42 flared (tube) all ends connection style, valve operation method: automatic.
Manufacturer part number D559A16D21 for national stock number 4820013382023.
Datasheet
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Product description
Safety Relief Valve NSN 4820-01-338-2023.
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MPN or Model
D559A16D21
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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.)
0.5 lb -
Thread Class
3a all ends -
Thread Direction
Right-hand all ends -
Flow Control Device
Poppet -
Disk Loading Method
Spring -
Maximum Operating Temp
275.0 degrees fahrenheit single response -
Connection Style
G42 flared (tube) all ends -
Valve Operation Method
Automatic -
Connection Type
Threaded external tube all ends -
Thready Qty Per Inch (tpi)
12 all ends -
Adjustable Pressure Range
+10.0/+30.0 pounds per square inch -
Maximum Operating Pressure
200.0 pounds per square inch single response -
Thread Size
1.312 inches all ends -
Seat Angle
37.0 degrees all ends -
Material
Aluminum alloy 2024 body -
Media For Which Designed
Air 1st responsefuel/oil, hydrocarbon 2nd responsehelium 3rd responsehydrogen 4th response -
Style Designator
Err-090 -
Thread Series Designator
Un 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 4820-01-338-2023 safety relief valveManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
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D559A16D21 | Circor Aerospace, Inc. |
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