What is the purpose of a steam trap?

The primary purpose of a steam trap is to remove condensate and air from a steam system while preventing the escape of steam. In a steam heating system, steam condenses back into water, which must be removed to maintain efficiency and proper operation. If condensate is not removed, it can lead to water hammer, decreased efficiency, and potential damage to the system. Moreover, steam traps play a vital role in allowing air to exit the system because trapped air can reduce the effectiveness of steam heating. The design of steam traps allows them to selectively permit water and air to pass through while closing off steam, ensuring that the heating process remains effective and efficient.