Adjustable valve inspection and maintenance

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I posted it incorrectly before; it was set as a paid reading post. I’m posting it again – everyone is welcome to read it! This book provides a comprehensive coverage, detailing the steps, standards, and tools required for the inspection and maintenance of control valves. It also covers new types of intelligent control valves, making it a valuable resource for those engaged in the inspection and maintenance of valves. Chapter 1 Introduction 1.1 Modern industry’s requirements for control valves 1.2 The development history and current status of control valves 1.3 Development trends of control valves 1.3.1 Expanding the product range 1.3.2 Using computers for design and calculation 1.3.3 Intelligence in control valves 1.3.4 The role of fiber optic technology and digital communication technologies Chapter 2 Structure of control valves 2.1 Composition and classification of control valves 2.2 Actuators 2.2.1 Traditional actuators 2.2.2 Side-mounted pneumatic actuators 2.2.3 Lightweight pneumatic actuators 2.2.4 Electro-hydraulic actuators 2.3 Valves 2.3.1 Traditional valves 2.3.2 Self-acting control valves 2.3.3 Control valves with low pressure drop 2.3.4 Digital valves 2.4 Upper valve cover and sealing packing 2.4.1 Structural forms of upper valve covers 2.4.2 Sealing packing 2.5 Intelligent control valves 2.5.1 Structural composition of intelligent electric control valves 2.5.2 Functions of intelligent electric control valves 2.5.3 Role of intelligent servo amplifiers 2.5.4 Intelligent control valve systems Chapter 3 Flow coefficient of control valves and its calculation