The book "Calculation and design of the valve group and the choice of the basic parameters of the crank-plunger pumps" by I. B. Matveeva is a unique publication that will become a reference book for engineers, designers and students studying mechanical systems and pumping equipment. In this work, the author shares his deep knowledge and experience in the design and calculation of pumping systems, which makes it an indispensable resource for anyone who wants to deepen their knowledge in this area. The book covers a wide range of topics related to valve groups and crank-plunger pumps. Readers will be able to learn about the principles of operation of these pumps, their design features and methods of calculating the main parameters. Matveev considers in detail how to choose the components of the pumping system in order to ensure its reliability and efficiency. In this context, the author not only shares theoretical knowledge, but also offers practical recommendations based on real examples from his practice. The book pays special attention to the calculation of the valve group, which plays a key role in the operation of pumps. Matveev explains how to properly design the valves so that they ensure the optimal operation of the system and minimize losses. This makes the book especially useful for engineers involved in the design and optimization of pumping plants. Who can like this edition? First of all, it will be interesting for technical students studying mechanical systems and hydraulics . The book will also be an excellent help for practicing engineers and designers who want to improve their skills and master new methods of calculating and designing pumping systems. Even experienced professionals will find in it a lot of useful tips and recommendations that will help them in their professional activities. The topics raised in the book cover not only technical aspects, but also issues related to the economic efficiency of pumping systems. Matveev focuses on how to choose the parameters of pumps correctly so that they meet the requirements of specific tasks and operating conditions. This makes the book relevant for professionals working in various industries, including oil and gas, chemical and construction. The author's style is distinguished by clarity and accessibility of presentation. Matveev is able to explain complex technical concepts in a simple and understandable language, which makes his book easy to understand. In addition, he actively uses illustrations and diagrams that help the reader better understand the material. and . B. Matveev is a well-known specialist in the field of pumping equipment, and his other works also deserve attention. Books written by him are distinguished by a high level of professionalism and practical orientation, which makes them a valuable resource for anyone interested in this topic. If you are looking for a book that will help you understand the intricacies of designing and calculating pumping systems, "Calculation and design of the valve group and the choice of the basic parameters of the crank-plunger pumps" will be an excellent choice. This publication will not only enrich your knowledge, but also inspire new ideas and solutions in your professional activities. Do not miss the opportunity to immerse yourself in the world of mechanics and hydraulics with the help of this fascinating and useful work!