How to get full main drain suction for sweeping

BassPlayingDude

Gold Supporter
Jun 13, 2018
26
Media, PA
I just had rain and was trying to get the main drain to suck up some dirt from brushing, and even with float valve diverter closed I was still not getting full suction. I just figured out a trick to do this. All you need to do is hold the Weir door closed until the skimmer drains. The float valve will close and voila! Full main drain suction. After you are finished, reset the float valve by pulling it out and re-seating it and you are back to skimming. Hope this helps someone!
 

JoyfulNoise

TFP Expert
Platinum Supporter
May 23, 2015
15,458
Tucson, AZ
They also sell float diverter valves with a movable window over the opening in the diverter for the skimmer. If you close the window and put the diverter in place, it will pull most of the suction from the drains. That way you don’t have to push on the weir door.
 

BassPlayingDude

Gold Supporter
Jun 13, 2018
26
Media, PA
They also sell float diverter valves with a movable window over the opening in the diverter for the skimmer. If you close the window and put the diverter in place, it will pull most of the suction from the drains. That way you don’t have to push on the weir door.
I did that, but I still wasn't getting full suction. Wth the float valve closed I could actually SEE the main drain sucking up the pollen.