[ChuckG]

The response above was concerning the T on the RO/DI unit.

Originally Posted by davidh202

I actually think you are OK, you are increasing the pressure on the run .My
Plumbing is 1'' out of my pump which reduces to 3/4 and splits to two return lines which in tun split to 4- 5/8 nozzles over the tank

At first I thought that reducing would simply increase the pressure but I don't think so. When you throttle back the ball valve on the output side of the pump it doesn't increase the pressure - it reduces the flow. Reeflo even says that you can throttle the darts back and they will consume less electricity so somehow back pressure on these motors kicks them into a lower gear, so to speak.

I'm replumbing again leaving the entire main section at 1.5" and reduce it at the T's. Since water will be going through 5 1" cut offs, I think it's safe to assume that would be the same as not reducing the pipe at all.