A sump that receives the waste from a single floor drain does not require what?

In this scenario, a sump that receives waste from a single floor drain does not require an airtight lid. Typically, sump pits need to be designed for practical access and maintenance, and an airtight lid is not necessary when the sump is only receiving waste from a single floor drain. This type of system usually allows for the escape of gases and moisture, which means that a tight seal is not required.

The other components, such as a drain cover, shut-off valve, and filter screen, play essential roles in the function and safety of the sump system. A drain cover is important for preventing debris from entering the sump, which could cause blockages. A shut-off valve is crucial for maintenance and ensuring that the flow of waste can be controlled when necessary. A filter screen helps in capturing larger particles, preventing them from entering the system and possibly causing clogs or damage.