Composition Disc in Valve Systems

What is the function of a composition disc in a Globe valve?

A) Flow control

B) Pressure regulation

C) Temperature control

D) Leak prevention

E) Material handling

Answer:

The function of a composition disc in a Globe valve is A) Flow control.

A composition disc is a crucial component in a Globe valve, designed to control the flow of fluid or gas in a pipeline. The disc moves in and out of the seat to regulate the flow rate effectively.

Unlike other types of valves such as Gate, Ball, Butterfly, and Plug valves, which have different mechanisms for flow control, the Globe valve utilizes a composition disc to achieve precise regulation.

This design allows for accurate adjustment of flow rates but may result in a higher pressure drop compared to other valve types. Understanding the role of a composition disc in a Globe valve is essential for proper valve operation and maintenance.