Introduction to Valves and Their Components

 When you complete this lesson, you will be able to explain the basic design and function of valves, major valve components, and flow control elements.

• Discuss the overall purposes served by valves in a system or process

• Illustrate various valve types and highlight their differences

• Explain how valve stem leakage is controlled

• Describe the operation of root and throttle valves

• Identify the following valve components: – Body – Bonnet – Stem – Actuator – Packing – Seat – Disk