Mods, if this doesn't fall under construction, can you kindly move it for me. I'm looking for help identifying a part (ergo the assumption for construction) but it might fall under another category.

I'm prep'ing to install a LQ but I'd like to drill as little as possible (or not at all if possible). I checked and planned to use the existing rainbow chorinator to tap into... but I didn't want lose any function so I figured I'd try to "T" off the pipe coming from the front of it.

Here's what I'm talking about (near the yellow arrow)...



Close up of actual part...



This part number ... R172273, is a 1/2" elbow joint. I'm trying to no avail at finding a 1/2" T splitter, so I won't lose the chlorinator if I need to increase the CYA and then the LQ for normal operation. Anyone have any ideas???