Final answer:
A backwater valve should be installed in the discharge line of an ejector to prevent reverse flow of water or sewage. It ensures the flow is consistently in the desired direction, maintaining the system's integrity. Installing a backwater valve is especially important in larger plumbing or sewer systems.
Step-by-step explanation:
The discharge line from an ejector should be provided with a backwater valve. A backwater valve is a device that prevents the reverse flow of water in a drainage system. It is typically installed in the discharge pipe to prevent water or sewage from flowing back into the ejector or the system it is connected to.
By installing a backwater valve in the discharge line of an ejector, it ensures that the flow of water or sewage is consistently in the desired direction, preventing any potential backflow issues. This is especially important in systems where the ejector is connected to a larger plumbing system or sewer system.
Overall, the backwater valve helps to maintain the proper functioning and integrity of the ejector system by preventing any backflow that could cause damage or disruptions in the system.