NSN 4820-00-216-9022

Valve Diaphragm

About this product

0.750 inches hole diameter, 12.875 inches outside diameter, 11.750 inches bolt circle diameter, material thickness: 0.128 inches .

Manufacturer part number 34138J for national stock number 4820002169022.


  • Product description

    Flat Valve Diaphragm NSN 4820-00-216-9022.

  • MPN or Model


  • Schedule B
    8481.90.9090 (Parts of taps, cocks, valves and similar appliances, nesoi)
  • NMF (National Motor Freight)
    000000 - No Nmfc Freight Description
  • Unit Weight (Est.)
    0.3 lb
  • Hole Diameter
    0.750 inches
  • Outside Diameter
    12.875 inches
  • Bolt Circle Diameter
    11.750 inches
  • Material Thickness
    0.128 inches
  • Center Hole Diameter
    1.125 inches
  • Bolt Hole Quantity
  • Material
    Rubber fabric reinforced
  • Style Designator
Flat Valve Diaphragm

An item in the form of one or more thin flexible sheets normally designed to form a tight seal between chambers of a valve, and to transmit motion to a valve disk either directly or through a mechanical linkage. The surface of the item(s) may not be formed or molded to have a beaded or rolled edge, ribs, or any other raised surfaces. The item may contain bolt holes and/or a center hole. Excludes diaphragm, valve, special shaped and gasket.

Mechanic Bill explains Valve Diaphragm

Pricing and Availability

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NSN 4820002169022

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
34138J Griswold Industries, Co.
C5410 Griswold Industries, Co.
C34138 Griswold Industries, Co.
C3737 Griswold Industries, Co.
34138 Griswold Industries, Co.
Stock Check
Availability for this item was last checked on 02/13/24. The quantities and conditions available at the time were:
  • NE: 20805
  • NS: 2891
  • SV: 19