What do some floor drain manufacturers provide to prevent concrete from entering the drain?

Some floor drain manufacturers provide plastic or rubber covers to prevent concrete from entering the drain during construction. These protective covers are designed to fit over the drain opening, effectively sealing it off from any debris or concrete that might otherwise get into the drain system while concrete work is being done. This prevents blockages and damage to the drain, ensuring proper drainage functionality once the construction is complete. By using these covers, the integrity of the plumbing system is maintained, and it minimizes the need for future repairs or cleaning of the drain caused by clogs from foreign materials.

The other options might serve various functions in plumbing systems, but they are not specifically designed for the purpose of protecting drains from concrete during construction activities.