Ty,
In most old pools the main drain was tied into the bottom of the skimmer. For the main drain to work at all you needed a floating diverter valve (or some type of device inside the skimmer to turn on the main drain).
In most newer pools, the main drain(s) are plumbed back to the equipment pad with a valve to shut off or control the amount of flow. The skimmer(s) are also individually plumbed back to the equipment with associated valve(s).
When the main drain(s) are plumbed back to the equipment pad, the skimmer hole closest to the water is normally plugged.
Thanks,
Jim R.
In most old pools the main drain was tied into the bottom of the skimmer. For the main drain to work at all you needed a floating diverter valve (or some type of device inside the skimmer to turn on the main drain).
In most newer pools, the main drain(s) are plumbed back to the equipment pad with a valve to shut off or control the amount of flow. The skimmer(s) are also individually plumbed back to the equipment with associated valve(s).
When the main drain(s) are plumbed back to the equipment pad, the skimmer hole closest to the water is normally plugged.
Thanks,
Jim R.