Journeyman Plumber Practice Exam

The statement is true because grease traps and interceptors are designed to prevent fats, oils, and grease (FOG) from entering the plumbing system and subsequently the wastewater treatment facility. Flow control devices play a critical role in this process as they help to manage the flow of wastewater into the trap or interceptor, ensuring that it operates effectively. By controlling the flow rate, these devices help to optimize the performance of the grease trap or interceptor, reducing the risk of FOG buildup and facilitating effective separation. This is crucial for maintaining the efficiency of the grease management system and complying with local plumbing codes and health regulations.

In some instances, without a flow control device, there could be overloading of the grease trap leading to inefficient operation or even failure to trap FOG effectively. This can create various problems including clogs in the plumbing system and potential contamination of the municipal sewer system.

Thus, the requirement for flow control devices in grease traps and interceptors is to ensure that they function correctly within their intended design parameters, making the statement true.