My plan is to weld the ferrule end of an 1-1/2 sanitary fitting to the bottom of the pan (link below) then build off of that with PVC pipe. The I.D. of the drain will 1-1/2 which I think is almost double the size of the original drain. I will be putting a 100 mesh filter in the drain system prior to the tank. Is there a consensus on where the least used part of the table is ?