Class 5 Boiler Practice Exam

What is the primary purpose of a steam trap in a piping system?

1. To regulate temperature

2. To prevent steam loss

3. To allow condensate removal

4. To provide backup pressure

The correct answer is: To allow condensate removal

The primary purpose of a steam trap in a piping system is to allow condensate removal. In steam systems, steam is produced and travels through piping to deliver energy for heating or other processes. As steam travels, it cools and condenses into water, known as condensate. This condensate must be removed from the system to maintain efficiency, prevent water hammer, and avoid damage to valves and components. Steam traps are specifically designed to differentiate between steam and condensate. They permit the escape of condensate while preventing the loss of live steam. By effectively removing this condensate, steam traps ensure that the steam system operates at optimal efficiency and reliability, allowing for continuous steam flow and minimizing maintenance issues. This capability is crucial for maintaining system pressure, improving heat transfer, and saving energy.