What is this thing?

[FlatDrPepper]

There is a strange pot kettle thing attached to one of the drain outputs on my variflow valve. Anybody have a clue what this is??





Also, I'm having trouble finding where to select to pull from the skimmer or drain. It is currently stuck in skimmer mode only. In the picture, there is only one pipe going up into the pump. Is there a common place that selector would be?




Thanks!
Cody