We're redoing our bathroom. I'd like to have a tub spout, two body jets, and shower head.
My original plan was to have the hot and cold water lines come into a mixing valve, run a line from mixing valve down to spout and up to diverter valve, and then from diverter into either a pressure stabilization loop for the jets or to the shower head.
The problem is that we run this very same setup in the basement. And when I divert 50% of the water to the body jets the shower head becomes very limited, and I lose a lot of shower head water to a trickle that just falls to the floor. It is an underwhelming experience.
Given that I assume, and a quick Google search seems to tentatively confirm, mixing valves cause some level of flow restriction or are designed to only allow a certain maximum flow rate, I can at least partially blame the valve for not providing enough pressure.
So I'm wondering if it may may sense to put a T in the hot and cold water lines, then run lines to two different mixing valves. One mixing valve would feed the tub spout and shower, while the other feeds the body jets. My hope is that this would accomplish two things:
- Increased overall flow rate as each mixing valve can allow its maximum flow to reach its single outlet. (so I get mixing valve max flow rate x2)
- More granular control over flow rate to shower jets (right now it's 50/50 if both are on, which may not be desirable)
Will these goals be accomplished? Are there any other reasons not to do this?
I've settled on Delta components at this point. I'm going to connect everything using pex and Sharkbite fittings.