The float valve monitors the water flow from the skimmer. If the flow is obstructed, or the water level fall below the skimmer throat, it will open the equalizer valve so water can be pulled from the main drain, preventing an air lock in the skimmer.
What are the two holes in my skimmer?
The skimmer sits at the waterline and catches leaves, bugs and trash so they do not clog the filter. ... Skimmers with a second hole help keep the pump from running dry if the water level is unstable.Sep 21, 2017
What is a pool skimmer float valve?
The float valve in the bottom is designed to shut off the skimmer and keep it from sucking air into the pump if the water level in the pool gets too low. On some systems where the skimmer and drain are both plumbed into the skimmer, the float valve serves to regulate the flow of water from the skimmer and the drain.