NSN 4820-00-874-7324
Restrictor Valve
About this product
2.850 in. Lg over-all,0.875 in. Across flats.
Manufacturer part number 1R3642-81 for national stock number 4820008747324.
Datasheet
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Product description
Restrictor Check Valve NSN 4820-00-874-7324.
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MPN or Model
1R3642-81
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Schedule B
8481.30.9000 (Check valves of materials other than copper, iron or steel) -
NMF (National Motor Freight)
127220 - Pressure Reg/red/relief Valves NOI -
Unit Weight (Est.)
0.6 lb -
Thread Class
3a 1st end -
Thread Direction
Right-hand 1st end -
Flow Control Device
Poppet -
Disk Loading Method
Spring -
Connection Style
Flared (tube) 1st end -
Connection Type
Threaded external tube 1st end -
Mounting Position
Horizontal -
Thready Qty Per Inch (tpi)
20 1st end -
Maximum Operating Pressure
3000.0 pounds per square inch single response -
Thread Size
0.437 inches 1st end -
Seat Angle
37.0 degrees 1st end -
Outside Diameter Tube Accommodated
0.250 inches 1st end -
Material
Steel comp 303 flow control device -
Media For Which Designed
Fuel/oil, hydrocarbon single response -
Surface Treatment
Anodize -
Style Designator
Straight thru -
Thread Series Designator
Unf 1st 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 4820-00-874-7324 restrictor check valveManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
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1R3642-81 | Saf Industries Llc |
32-69004-81 | Boeing Company, The |
Stock Check
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