Packages for installing pressure tanks usually contain all the parts required to link a pressure tank to a water supply system. These kits are made to make installation easier and guarantee that the plumbing system, water pump, and pressure tank are connected correctly. Call us and ask more information based on Pressure Tank Installation Tee Packages. Packages for installing pressure tanks usually contain all the parts required to link a pressure tank to a water supply system. These kits are made to make installation easier and guarantee that the plumbing system, water pump, and pressure tank are connected correctly. Call us and ask more information based on Pressure Tank Installation Tee Packages.