Hello everyone at TFP! Newish pool owner here first time posting, but have read alot of great information on this site.. I am going to be redoing some plumbing here soon and was hoping for some of your input. This is a roughly 20k gallon oval shaped salt water pool with a liner, and has two returns with one main drain and one skimmer. I can only assume the one return line has a "T" somewhere underground splitting into two.
The sand filter seems a bit dated, and currently is in need of a new multi-port valve. It has cracking around the pressure gauge and a small leak. The leak can probably be fixed, the cracking however can not. The sand was new about 4 years ago so I believe that may need to be replaced now as we battled mustard algae last summer.
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As you can see the current setup uses those PVC ball valves, all of which are in need of being replaced. I am not sure I need a valve on the waste line, but was going to replace the two valves for the skimmer and drain with a Jandy 3 way valve. All piping is 1.5" and I believe the inlet on the Hayward Ecostar to be 3". I have read alot of differing opinions regarding the length of pipe (if any) needed between the last bend and the pump to reduce turbulence.. Are there any potential issues by connecting the 3 way almost directly to the pump inlet? I also want to add unions where necessary and improve on the existing design in any way if possible.
I should add that we are considering adding a solar heating system in the next year or so as well. I also have no idea what the two capped lines coming out of the ground are for...
Any information, recommendations or suggestions will be most appreciated! Thanks for reading