NSN 4820-00-328-8236
Restrictor Valve
About this product
Poppet flow control device, spring disk loading method, flareless 2nd end connection style, valve operation method: automatic.
Manufacturer part number 4R121-117 for national stock number 4820003288236.
Datasheet
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Product description
Restrictor Check Valve NSN 4820-00-328-8236.
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MPN or Model
4R121-117
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Schedule B
8481.30.2090 (Check valves of steel) -
NMF (National Motor Freight)
051080 - Faucets, Bibcocks, Gates Valves -
Unit Weight (Est.)
0.9 lb -
Thread Class
3a 1st end -
Thread Direction
Right-hand 1st end -
Flow Control Device
Poppet -
Disk Loading Method
Spring -
Maximum Operating Temp
275.0 degrees fahrenheit single response -
Connection Style
Flareless 2nd end -
Valve Operation Method
Automatic -
Connection Type
Threaded external tube 2nd end -
Mounting Position
Horizontal or vertical -
Thready Qty Per Inch (tpi)
18 1st end -
Maximum Operating Pressure
3000.0 pounds per square inch single response -
Thread Size
0.562 inches 2nd end -
Seat Angle
12.0 degrees 2nd end -
Outside Diameter Tube Accommodated
0.375 inches 1st end -
Material
Stainless steel -
Media For Which Designed
Fuel/oil, hydrocarbon single response -
Surface Treatment
Passivate -
Style Designator
Straight thru -
Thread Series Designator
Unf 2nd end
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Restrictor Check Valve
A valve having an orifice in the poppet, disk, or the like, to permit restricted fluid flow when the valve is seated. It does not have a stem or provisions for pressure adjustments, and is similar to a valve, check with the exception of the orifice which permits fluid flow in more than one direction.
![Mechanic Bill explains Restrictor Valve](/public/images/billy-thinking.png)
Pricing and Availability
Get a quote for 4820-00-328-8236 restrictor check valveManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
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4R121-117 | Allen Aircraft Products Inc |
749831-117 | Lockheed Martin Corporation |
Stock Check
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