We are considering purchasing four 7bbl SS tanks that were previously used in the dairy industry. These tanks have been pressure tested and are rated to 30psi. Each tank is cones and has a TC drain port in the base. We would like to use these tanks in our cold room as serving tanks. My question is:

1. What would I need (ports, etc) to do in order to convert the tank(s) to serving tanks?

Thanks for all the help!