NSN 4820-01-342-1970

Disk Diaphragm

About this product

3.670 inches outside diameter, 150.0 pounds per square inch pressure rating, stainless steel material, media for which designed: air.

Manufacturer part number 7532-501-210 for national stock number 4820013421970.


  • Product description

    Valve Disk NSN 4820-01-342-1970.

  • MPN or Model


  • Schedule B
    8481.90.9090 (Parts of taps, cocks, valves and similar appliances, nesoi)
  • NMF (National Motor Freight)
    051080 - Faucets, Bibcocks, Gates Valves
  • Outside Diameter
    3.670 inches
  • End Application
    3in swing check valve
  • Pressure Rating
    150.0 pounds per square inch
  • Material
    Stainless steel
  • Media For Which Designed
  • Style Designator
    Swing check
  • Reference Number Differentiating Characteristics
    Magnetic permeability shall not exceed 2.0 after fabrication
Valve Disk

An item of various shapes (usually circular, conical, cylindrical, or rectangular) used to prevent or regulate the flow of liquids or gases through the valve. May include a retainer, screw, holder, and the like.

Mechanic Bill explains Disk Diaphragm

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NSN 4820013421970

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
7532-501-210 Velan Valve Corporation
73811-130/7532-501-210 Velan Valve Corporation
7532-501-210VM Velan Valve Corporation
73811-130/7532-501-210VM Naval Inventory Control Point
7532-501-210VM Naval Inventory Control Point
Stock Check
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