A steam trap serves what primary function?

A steam trap plays a crucial role in steam systems by allowing condensate, air, and other non-condensable gases to escape while preventing steam from escaping the system. This is important because steam traps help maintain the efficiency of the steam system by ensuring that steam is used effectively for heating and process applications. When steam condenses in the system, it becomes water (condensate), which must be removed to avoid issues such as water hammer or reduced heat transfer efficiency.

By only allowing the condensate to pass through while keeping the steam contained, the steam trap helps to maximize the thermal efficiency of the system and maintain optimal operating conditions. This function is vital for the reliability and longevity of steam equipment, making the understanding of a steam trap's operation essential for any steam engineer.