What is the recommended distance for the end-of-main-vent from the end of the steam main?

The recommended distance for the end-of-main vent from the end of the steam main is typically 15 inches. This specification is important for ensuring that the steam system operates efficiently and effectively. The purpose of maintaining this distance is to allow adequate space for condensate drainage and to prevent potential issues, such as water hammer or backpressure, which can occur if the steam is venting too close to the end of the steam main. By adhering to this distance, it ensures that the steam moves freely toward the vent, helping to avoid unnecessary strain on the system and promoting better overall performance.

Understanding this measurement is crucial for maintaining the integrity of a steam heating system. In practice, following this guideline contributes to the longevity and reliability of the plumbing and heating system as a whole. Proper venting distances are part of best practices in plumbing and should always be considered during installation and maintenance to ensure compliance with relevant codes and standards.