Is the bell correct???

Hi, guys.
As some may have read along, I want to empty the pots, since I get MSD and ESD separately, I have to connect them again!!! So the question is, is that with these bells???

893 253 193 B "ACTS"

could there be difficulties because the pipes are too close to each other and the bells are jammed together???

And still very important, what kind of pipe diameter did you take (who has done it before) that come into the empty pots???

4.2 carm.

Thanks to you

Ciao
Jens