Which of the following is a common type of steam trap?

A thermostatic steam trap is indeed a common type of steam trap used in various applications within power engineering and steam systems. It functions based on temperature changes and utilizes a temperature-sensitive element, like a bimetallic strip or a bulb, to control the flow of condensate and steam. When the temperature of the contents changes, the trap opens or closes to allow condensate to drain while preventing steam loss. This mechanism ensures efficient operation of steam systems by maintaining the appropriate pressure and temperature.

Thermostatic traps are widely used because they can automatically adjust to varying loads and conditions without the need for manual intervention. They help maintain optimal steam system efficiency and prevent water hammer, which can be detrimental to equipment and piping systems.

Other types of steam traps, while functional, may not be as commonly utilized in standard applications. Options like automatic drain valves, pneumatic traps, and electric steam traps can serve specific purposes or niche applications, but the thermostatic steam trap stands out as a prevalent and effective choice in many industrial settings.