RTJ (ring type joint) and RF (raised face) flanges differ from each other, and do not mate. RTJ type are sealed with an O-ring or oval element; RF with a flat gasket. Googling each term will produce a multitude of pictures and suppliers. There are also "retained gasket" flanges that have a tongue-and-groove construction that surrounds the gasket so that it can't squeeze out (or in, for cases of vacuum).
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Thank you for your information , but my questions is for example the dimensions of a flange RF 6 Inch and #600 -include number of bolt and OD and e.g.- are same the flange RTJ with same size and class (6" # 600)
They have discrepancy's in face only or in structure also.?
If they are the same pipe size and pressure class, the difference will be the face details; the OD, body thickness, bolt size/count/pattern, and pressure capability should be the same. (I think, but am not absolutely certain.)
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In vino veritas; in cervisia carmen; in aqua E. coli.
Flanges - RTJ and RF
Re: Flanges
