What is the maximum number of sprinklers that can be connected to a single branch line in a wet pipe system?

In a wet pipe system, the maximum number of sprinklers that can be connected to a single branch line is determined by the hydraulic design of the system to ensure that adequate pressure and flow are delivered to each sprinkler during operation. The correct answer identifies that a single branch line can support up to 16 sprinklers based on standard industry practices and codes such as NFPA 13.

This limit helps in maintaining the required pressure and ensuring that the entire system operates efficiently during a fire event. If too many sprinklers are connected to a single branch line, it can lead to inadequate pressure at the farthest sprinklers, compromising their effectiveness.

Understanding this aspect of system hydraulics is essential for anyone working with fire sprinkler systems, as it directly influences the protection offered by the design. It is critical to ensure that the installation aligns with the guidelines presented in NFPA or similar standards, which are designed to promote safety and efficacy in fire protection systems.