NSN 4820-00-053-8751

Restrictor Valve

About this product

Poppet flow control device, flare (tube) 1st end connection style, threaded internal tube 1st end connection type, mounting position: horizontal.

Manufacturer part number 2R2043-97 for national stock number 4820000538751.


  • Product description

    Restrictor Check Valve NSN 4820-00-053-8751.

  • MPN or Model


  • Schedule B
    8481.30.9000 (Check valves of materials other than copper, iron or steel)
  • NMF (National Motor Freight)
    095190 - Hardware, NOI
  • Unit Weight (Est.)
    0.2 lb
  • Thread Class
    3b 1st end
  • Thread Direction
    Right-hand 1st end
  • Flow Control Device
  • Connection Style
    Flare (tube) 1st end
  • Connection Type
    Threaded internal tube 1st end
  • Mounting Position
  • Thready Qty Per Inch (tpi)
    20 2nd end
  • Maximum Operating Pressure
    3000.0 pounds per square inch single response
  • Thread Size
    0.438 inches 2nd end
  • Seat Angle
    37.0 degrees 2nd end
  • Outside Diameter Tube Accommodated
    0.250 inches 2nd end
  • Material
    Rubber synthetic packing
  • Media For Which Designed
    Hydraulic fluid, phosphate-ester base single response
  • 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

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NSN 4820000538751

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
2R2043-97 Saf Industries Llc
32-69004-97 Boeing Company, The
Stock Check
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