Hey fakr - so there are 5 ports on the fermenter? I guess the top one is 4"? What are the others, all 1.5"?
Since fakr hasn't answered immediately...
Top 4" - Cleanout
Beside the top, 1" - Spunding, Loading
Just above the cone, 1" - Sampling, Temp probe
Just above the bottom, on the cone, 1" - Racking
Bottom, 1.5" - Trub dump.
JQ