Compare Model Drawings, CAD & Specs Flange Size Flange Size 2 Material Inner Diameter1 Length Availability Price
$33
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NW25 NW16 Aluminum 16 mm 40 mm
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NW40 NW16 Aluminum 16 mm 40 mm
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$34
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NW40 NW25 Aluminum 22 mm 40 mm
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NW50 NW40 Aluminum 34 mm 40 mm
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$48
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NW25 NW16 304 Stainless Steel 16 mm 40 mm
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$54
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NW40 NW16 304 Stainless Steel 16 mm 40 mm
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$60
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NW50 NW16 304 Stainless Steel 16 mm 40 mm
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$52
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NW40 NW25 304 Stainless Steel 22 mm 40 mm
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$56
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NW50 NW25 304 Stainless Steel 22 mm 40 mm
In Stock
$60
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NW50 NW40 304 Stainless Steel 34 mm 40 mm
In Stock

Specifications

  • Component Type
    Conical Flange Reducer
  • Series
    Series 31
  • Flange Type
    ISO-KF
  • Length
    1.57 in. (40 mm)

Features

ISO-KF Vacuum Flange Standard Dimensions

inch (mm)

The International Standards Organization has defined the interface dimensions of ISO-KF vacuum flanges allowing the interchanging of components that conform to the ISO-KF standard. The ISO-KF flange system provides is a modular building block method for creating a vacuum systems. Since component dimensions are standardized, elbows, tees, crosses or valves for a given flange size can be interchanged. The flanges are sexless and the seal is symmetrical allowing components to be rotated. By using ISO-KF standard components, vacuum system assembly is quick and cost effective.

Joining ISO-KF Vacuum Flanges

ISO-KF vacuum flange components are joined by inserting a centering ring seal between the two flange faces, then securing the assembly with a flange encompassing clamp. There are a variety of flange clamp choices available. The wing-nut flange clamp is hand tightened until metal contact is felt. The toggle flange clamp is convenient and easy to use and provides enough sealing force to fully compress the O-Ring, so that the flanges and the centering ring are metal to metal. The self-adjusting clamp locks in a positive method making it ideal when clamp must be removed frequently, like leak testing or gauge calibration. Bulkhead flange clamps attach an ISO-KF flange directly to a chamber or base plate. The two-part, bolted clamp fits over the flange with a centering ring assembly used between the flange and the opening.