Opening on Blind Flange
Opening on Blind Flange
(OP)
hi engineers
i want to design a 20L reactor with 20bar pressure and 200c temp and on top of it there is a STD. 10 inch blind flange. there should be a mechanical stirrer mixer in the reactor and i should consider an opening on the blind flange but i dont know how much diameter i should consider for it and how much is allowable to consider. and also i should consider about 4 extra opening for other instruments such temp/pressure/ph/etc. on the blind flange.
these are my questions:
1- how much diameter i should consider for mechanical stirrer?(considering the mechanical seals that should be located there and also i dont know the diameter of that)
2- how much is allowable for opening diameter on blind flange?
3- is it allowable to make 4 more 3/4 in opening on the blind flange around the stirrer opening?
Code design ASME BPVC SEC. VIII DIV.1
thank you.
i want to design a 20L reactor with 20bar pressure and 200c temp and on top of it there is a STD. 10 inch blind flange. there should be a mechanical stirrer mixer in the reactor and i should consider an opening on the blind flange but i dont know how much diameter i should consider for it and how much is allowable to consider. and also i should consider about 4 extra opening for other instruments such temp/pressure/ph/etc. on the blind flange.
these are my questions:
1- how much diameter i should consider for mechanical stirrer?(considering the mechanical seals that should be located there and also i dont know the diameter of that)
2- how much is allowable for opening diameter on blind flange?
3- is it allowable to make 4 more 3/4 in opening on the blind flange around the stirrer opening?
Code design ASME BPVC SEC. VIII DIV.1
thank you.





RE: Opening on Blind Flange
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand
RE: Opening on Blind Flange
RE: Opening on Blind Flange
RE: Opening on Blind Flange
RE: Opening on Blind Flange
RE: Opening on Blind Flange
RE: Opening on Blind Flange
What happens when i design a new flange? How can i buy it or made it?
RE: Opening on Blind Flange
ON EDIT, I'd add: B16.5 sizes probably not usually plate "off the shelf".
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand
RE: Opening on Blind Flange
Your flange will likely be made out of plate, with the required examinations done on the material before you can use it. Unless the MAWP and T are lower than that of the 300# flange you intended to use, you will need a plate which is thicker than the 300# blind flange to make up for missing area from all the holes you're cutting into it.
Note that a B16.5 flange even without holes sometimes fails the Appendix 2 flange calculation due to excessive bolt loading- the Appendix 2 designed flange would need to be thicker.