I'm looking for maximum flow rate to a tub for faster fill. The Delta R10000-UNBXHF only has the shower port. (Not sure why they don't have a high flow for a tub given the size of some of the tubs these days). I could plumb the shower port around and down below the valve to a tub spout (although they seem to say don't do this) which would be easiest with PEX (but again, they say not to use PEX to the tub spout). Or some seem to suggest this valve can be installed upside down. If that makes more sense, do I just install the cartridge (series 17) upside down, or do I just plumb cold on left and hot on right? Or both?
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