What is the function of a riser nipple in a sprinkler system?

The function of a riser nipple in a sprinkler system is to serve as a vertical piece of pipe that connects the main supply line to branch lines. This vertical arrangement allows for the distribution of water to the various sprinkler heads located throughout a building or area being protected. By being positioned vertically, the riser nipple facilitates the efficient flow of water from the main line downward to the branches, ensuring that the fire protection system operates effectively during a fire emergency.

In the context of a sprinkler system, the riser nipple is crucial as it helps maintain proper water pressure and flow required for optimal sprinkler performance. Understanding its role is vital for anyone involved in the design, installation, or maintenance of fire protection systems.