What does the term "feed main" refer to in a sprinkler system?

The term "feed main" specifically refers to the main supply line that originates from the riser and is responsible for distributing water to various parts of the sprinkler system. This is a critical component in ensuring that water reaches all areas where sprinkler heads are located, providing the necessary coverage for fire protection. The feed main is designed to maintain adequate pressure and flow to supply multiple branches or laterals extending to the individual sprinkler heads.

In the context of fire protection systems, having a reliable feed main is essential since it ensures that the system can perform effectively in the event of a fire. This line plays a fundamental role in the overall architecture of the sprinkler system, working in conjunction with other components such as branch lines and control valves. Understanding the significance of the feed main is vital for professionals in the sprinkler fitting field, as it influences system design, installation, and maintenance practices.