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Binhai Industrial Park, Longwan District,
Wenzhou, China
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 Binhai Industrial Park, Longwan District, Wenzhou, China


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Stainless Steel ISO Vacuum Blank Flange


Stainless Steel blank-off flanges are used to close off unused NW10 to NW50 ISO-KF vacuum flange ports.

  • Close off unused ISO-KF ports

  • 304 or 316 Stainless Steel construction, aluminum is available

  • NW63 to NW500 flange sizes

The ISO-KF Stainless Steel Blank Flange is also referred to as a "Blank-Off" flange and is used to close off unused size NW16 ISO-KF vacuum flange ports. Series 31 ISO-KF vacuum components are designed for use at subatmospheric pressure and use standard interface dimensions defined by ISO allowing them to be interchangeable with other ISO-KF compliant components. Series 31 components can be used as modular building blocks to create vacuum piping systems. ISO-KF vacuum flanges are joined by inserting a centering ring between the two flange faces, and securing them with a flange encompassing clamp.

The ISO has defined the interface dimensions, allowing the interchanging of components that conform to the ISO-KF standard’s dimensions. The ISO-KF system is a modular, building block method of creating a vacuum piping system. There are several advantages in the use of ISO components. Since component dimensions are standardized of elbows, tees, crosses or valves. 


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