So I upgraded to the 2500gph on my 18' easy set, and the one thing I always hated was how I could only run the skimmer or the main strainer and it was to high in my opinion. Well now I can do both at the same time and draw suction from the bottom of the pool
As all Intex owners know, the fittings arent exactly universal, however there is something you can do to make life easier. This first picture show the thru wall fittings. I got 2 new ones with my new pump so I didnt have to remove my others until the swap out. The outer threads are a standard 4" thread albeit a little to short for a good fit. The inner thread is just a bit to small for a standard 3" fitting. So this is how you make it work. Take a dremel, file, knife, anything to make the hole bigger and remove enough material for a standard 1 1/2 coupling to fit. Once you do that anything is possible. the one on the left has the coupling installed the right one is for reference. I didnt glue the coupling because it fits real tight.
now what I have in this pic is the thru wall fitting installed and plumbing for the skimmer and "main" drain. you can see that what I did was immediately install a 1 1/2" Y and then the valves. The valve for the skimmer is 1" because I found that the skimmer tube fits perfectly on a 1" coupling. As for the strainer at the bottom I used an extra thru wall fitting with the standard strainer attached and since the fitting that would normally be outside the pool is a standard 2" thread, adapting it to 1 1/2" was easy. If I had a metal frame pool I would put the elbow on after the Y and then the valve to keep it closer to the wall.
close up of valves
nothing is glued to make removal easy and a union unnecessary, plus it all fits tight enough to hold with out glue. I plan to do something similar on the return so I can have a pipe come up above the water for a fountain and one for normal return.
This should be possible for any Intex pool that has these thru wall fittings.