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20 mm flange equivalent

20 mm flange equivalent

20 mm flange equivalent

(OP)
The following link describes the equivalent metric and NPS pipe sizes.  Is there a similar link for flanges.  I have (what I believe to be) a 20 mm flange, probably the equivalent of Class 300. Will a 3/4 inch Class 300 bolt up?  (I can't take it apart until an outage.)  All the group 1.x material of B16.5 exceed my Max working pressure of 512 @ 200 F.  


http://www.extolohio.com/DATA/METRIC/metric_nominal_pipe.html

Donald Blachly, PE

RE: 20 mm flange equivalent

You'll need to verify the flange standard used. It may be BS or DIN and will not necessarily fit a B16.5 standard. Perhaps you have a drawing or the flange might be stamped. Here's a link showing some DIN and BS10 flanges. Also do a search for BS4504.

http://msflange.com/products.html

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