Pool main drain 

The water drainage or outlet element located on the bottom of the pool. It is highly recommended to install it during the construction of a new pool because it plays a significant role in water circulation, preventing stagnant water from forming at the bottom of the pool. It is crucial to ensure water flow in this area as well. When draining the pool for maintenance or cleaning, it is much more convenient to use the pool’s own filtration system to empty the water, eliminating the need for a separate submersible pump for water exchange.

Floor inlet nozzle Usually installed in deck-level (overflow) pools. These nozzles are built into the pool floor and push the water upwards, carrying small impurities along with it, which then exit into the overflow channel at the top of the pool wall.