Wanting lots of volume

[shawgf]

I am about to embark on renovating my master bath shower. the plan is to have one rain shower head and one hand held sprayer. I truly love my hot showers, want to ensure that I have plenty of water flow and pressure for both these heads when they are on. My home has a tank-less water heater, and the water pressure is 42 psi. If you could let me know what/how or hardware I should use so I can have my mini car wash, that would be great. I am able run dedicated lines. Thanks

 

[Chris]

Larger the supply line the more volume you will get but tapping off a 1/2" line and increasing will not do much good. You would have to come off a line larger then the line you are installing for that to work properly. Maybe some others can chime in with more info on this.

 

[johnjh2o]

Today's shower heads are only capable of producing 2.5 gallons per min. A 1/2 copper line should have no problem supplying two heads. If you remove the flow restricter in the heads it could become a problem.

John

 

[shawgf]

On may current shower head I have removed the restrictor and would do so on the new ones.

 

[SlowDrip]

As Chris has stated, tapping a larger line into existing 1/2" is pointless. You will need to run 3/4" or 1" all the way in order to see any increase in water volume to the shower heads.

 

[shawgf]

In doing some research at different valves it looks like they vary greatly in there water flow (GPM) from 2.5 all the way up to 9 plus.