Suction manifold redo

[mikespoolfl]

Getting ready to redo the suction manifold, all the piping is 1.5 inch. I’m going to increase the manifold piping and piping to the pump to 2 inch. My thinking on this is more efficient flow. Will be replacing the ball valves also but will be using the same size ( 1.5 inch).

Anyone know if the Jandy Gold Standard ball valves (one with the union on one end) are full port?
Would moving the pump take off to the middle of the manifold make much of a difference?

 

[JasonLion]

Increasing the manifold to 2" will improve the flow rate, but only by a little.

Putting the pump take off in the middle would make the draw from all four pipes more uniform. That may or may not be what you want. Often the pump take off is placed next to the main drain and the skimmer with the shortest pipe is placed at the far end of the manifold, in an attempt to tailor the non-uniform flow rates of the manifold to the situation. Again, this doesn't usually make all that much difference.

 

[waste]

Welcome to TFP!!

I can't say about the 'Gold Jandy' valves

However, 2 of the lines coming into your pump are labeled 'returns'

Jason's one of the guys I hoped would answer you post, and he has

 

[mikespoolfl]

Bad lableing, they should be pool drain and spa drain. Between pool drain and skimmer will be new take off for pump. I found a good price on these "Pentair 1.5" PVC, 2-Way Lube-Free Diverter Valve, with 2" Slip Outside" $22.76. If order is over $149 free shipping.