What is the purpose of a dry pipe in boiler?

A dry pipe in a boiler system serves to prevent water from entering the steam lines, ensuring that only steam is delivered to the distribution system. This is crucial for maintaining system efficiency and preventing water hammer, which can cause damage to pipes and equipment. The dry pipe typically incorporates a trap or a separator to remove any condensate, thereby ensuring the integrity of the steam supply. Overall, it helps maintain optimal operating conditions in steam systems.