Pride Plumbing came out to remove a Watts LF009M3QT 6-inch backflow assembly and install a bypass from shut off number one to shut off number two. After shutting the water off to the building, we used a mini excavator to lift the old assembly out of place and then we capped off both shut off valves. We then installed a new copper bypass line from shut off valve number one over to shut off valve number two. After the bypass was installed, we turned the water back on and checked for leaks while the company's maintenance team went around and tested all the building's fixtures for water pressure and proper operation.