These stainless steel tanks are fabricated to order allowing for complete customization for your application. However don't expect to wait 12-14 weeks for your stainless steel mixing tank. MixerDirect through a pre-engineering process, can deliver your tank in less than half that time. Just submit your specifications , and we can modify a standard stainless steel tank design, get you a drawing to approve, you sign it and away we go. Standard tanks drain through the bottom mount 2NPT half coupling.