I have found the ShowerBlaster shower head from Products That Work! to be the most awesome shower head I have ever used. They have sold thousands of these modified showerheads that deliver a powerful 12.5GPM (57LPM) pressure. It's the only modified showerhead that is bored inside, all the way through, to the same inner diameter as my water pipes. Simply amazing imo!!
http://productsthatwork.us/en/
By measuring each hole in the shower head and getting the pressure and then mathematically it can be figured out
There is a screen and/or a water saver in the shower head. The screen may be plugged with sediment from in the water.
You can get the bestseller showerhead on Amazon for just $29.99. It has high pressure and you can get a complimentary shower filter capsule if you have hard chlorinated water. Or a shower arm if your shower is too low.
Aerator in shower head is plugged up. Unscrew head, clean it out, and replace. Make sure you have teflon tape on hand for the treads on the shower arm when putting the head back on.
High pressure shower heads will hold up best to hard water. However, regular cleaning is still advised.
The velocity does not depend on ther shower head, however it does depend on the cold mains pressure, a higher pressure will result in a higher velocity, and visa versa.
The simplest and lowest cost solution is to replace the shower head with one designed to increase the pressure.
A shower head with different pressure boost options that you can easily switch between and go from massage feel to shampoo rinsing.
You would use it to deliver a constant pressure at the shower-head, in situations where the water pressure is either low, or fluctuates.
The piping has to be the exact same length for each shower head from the tee where the cold and hot water feeds from the top of the diverter faucet.
Yes, you can install a tee in the riser. The pressure loss will be minimal since both shower heads will have a flow restrictor unless you remove them. If you remove them, you probably wont notice any difference. If you do notice a difference, put the flow restrictor back in the closest shower head to the shower valve.
i found a great website for discount shower heads, but it also has a great support section with step by step pictures and instructions, including tips on increasing water pressure. htp://www.showerstore.com