The book "Screw pumps", written by Dmitry Fedorovich Baldenko, M. G. Bidman and W. L. Kaliszewski is an indispensable source of knowledge for specialists in the field of hydraulics, mechanical engineering and energy. This work immerses the reader in the world of screw pumps, revealing their design features, principles of operation and scope of application. If you are interested in pump-related technologies or are a professional in this field, this book will be a real guide for you. From the first pages, the authors set the tone, demonstrating a deep understanding of the topic and a passion for their work. The book begins with the basics, explaining what screw pumps are and how they function. Screw pumps, thanks to their unique design, are able to pump liquids with high viscosity and