Book excerpt: Industrial Hydraulic technology is expanding and as fascinating as ever. Hydraulic systems provide the muscle power to run the machines with the smoothest control possibilities. Many professionals are designing, constructing, and maintaining hydraulic systems every day. Several budding engineers are initiated into the technology of fluid power now and then. Therefore, the spread of technological information on fluid power is essential for the advancement of fluid power technology. The textbook on 'Industrial Hydraulics - Basic Level (in English Units)' is written to meet this objective. The textbook deals with the components and circuits of hydraulic systems. The book uses the SI system of units. The fundamentals required to understand the core topics are given initially. The book describes the topics on power packs, hydraulic actuators, and control valves, in detail. The book also presents the maintenance, troubleshooting, and safety aspects of hydraulic systems. The book has been written by a professional trainer who has trained thousands of professionals and students, over 25 years. If you are looking for a more in-depth knowledge into fluid power, then this book is a valuable resource that will assist you in your quest for professional development.