I Innovations in the manufacturing industry are increasingly developing, one ofwhich is innovation in machines that use hydraulic systems. Therefore, thishydraulic system is important to study. In addition to studying the theory ofhydraulics, practicum is also required. In this practicum, you do not have to godirectly to the machines, but you can use hydraulic system props. In the controllaboratory of the Faculty of Industrial Technology, Trisakti University, there is ahydraulic system demonstration that uses a 220volt AC control valve. This is verydangerous, so it must increase its safety, namely by changing the electricity on theelectrical board which was originally 220volt AC to 12volt DC, making the drivercontrol to activate the 220volt AC solenoid separate from the electrical board. Inaddition, improvements were made to the components of the hydraulic systemprops so that they can work optimally. As well as making standard operatingprocedures as a practical guide.