The LOKRING hydraulic aggregate produces the required working pressure for the flaring and assembly tools. The aggregate is transportable and, according to its application, it is available at each workplace. The LOKRING tools are connected to the hydraulic aggregate by quick connections and hydraulic hoses. To actuate the aggregate, simply push the remote control switch that can be found on the tool. The hydraulic pressure is controlled by a switch and control gear, as well as control valves to the tools.