What is the minimum water seal depth required for oil separators?

The minimum water seal depth required for oil separators is 18 inches. This requirement is critical because an adequate water seal depth helps to ensure that any oils or other floating materials are effectively contained within the separator and do not escape into the drainage system. The water seal acts as a barrier that prevents the migration of odors and gases, which can be harmful to both the environment and public health.

It is important to maintain this specified depth to ensure that the system operates efficiently and complies with regulatory standards. Insufficient water seal depth may allow contaminants to bypass the separator's treatment mechanism, leading to environmental pollution and potential regulatory violations. Thus, adhering to the 18-inch requirement is essential for the effective performance of oil separators in plumbing systems.