1-321-802-5889

NSN 4820-00-574-5643

Restrictor Valve

About this product

Poppet flow control device, spring disk loading method, gasket seal (boss) 1st end connection style, valve operation method: automatic.

Manufacturer part number A51H9221-3 for national stock number 4820005745643.

Datasheet

  • Product description

    Restrictor Check Valve NSN 4820-00-574-5643.

  • MPN or Model

    A51H9221-3

  • 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
  • Thread Class
    3b 1st end
  • Thread Direction
    Right-hand 1st end
  • Flow Control Device
    Poppet
  • Disk Loading Method
    Spring
  • Connection Style
    Gasket seal (boss) 1st end
  • Valve Operation Method
    Automatic
  • Connection Type
    Threaded internal boss 1st 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 1st end
  • Outside Diameter Tube Accommodated
    0.375 inches 1st end
  • Material
    Aluminum alloy
  • Media For Which Designed
    Oil, hydraulic single response
  • Style Designator
    Straight thru
  • Test Data Document
    26512-a51dcvbh027 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
  • Thread Series Designator
    Unjf 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

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NSN 4820005745643

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
A51H9221-3 Northrop Grumman Systems Corporation
6125-4 Pneudraulics, Inc.
A51H9221-3 Northrop Grumman Systems Corporation
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