A wet system with a trapped section of pipe that exceeds 50 gallons of water shall have a minimum of what size valve and plug?

The rationale behind needing a minimum valve and plug size of 1 inch for a wet system with a trapped section of pipe exceeding 50 gallons of water is based on system efficiency and maintenance functionality. A valve of this size allows for effective draining and maintenance of the trapped water section, helping prevent issues such as water stagnation, which can lead to corrosion, bacterial growth, or system failure.

A 1-inch valve facilitates a higher flow rate, ensuring that the system can be quickly drained when necessary, thereby making regular checks and maintenance safer and more effective. This size also complies with industry standards that dictate the capabilities and handling of larger volumes of water in fire protection systems. Fulfilling these requirements is crucial for maintaining proper system operation and safety regulations in wet pipe sprinkler systems.