The valve in the shower control needs to be renewed.
Yes and what is the question?
Employ a plumber.
tighten the nuts and bolts and clean the heads with crl or soap scum remover- or replace
The ones that I am used to are in the shower head. You have to remove the shower head or nozzle using a wrench. The restrictor should be right in the front where it connects to the pipe. It's just usually a small piece of plastic that only allows so much water to pass through. Remove that and you can put the shower head back on. If the fitting leaks you may need to get some teflon tape to wrap around the threads when you put it back on. Have a good shower.
Does the shower drip constantly over a period of 4-5 hours, if not, it's water holding in the shower head which has a water saving feature that holds water in the head. If it drips constantly, you'll need to change your seals on your stems. It's fairly simple if you have the correct tools.
High pressure shower heads will hold up best to hard water. However, regular cleaning is still advised.
More "VOLUME" flowing from the tub spout then the shower head as the shower head has a flow restrictor
Put teflon tape on the threads. 6 or 7 turns will do fine
you did not pay bill
Remove the shower head and clean out anything that might be blocking it, such as hair or debris. Replace the shower head and turn on the water; the water should be running.
A power shower head mixes moving air with water, to increase the strength of the water coming from the shower head, while using less water. The advantages are lower water bills, using less water and protecting the environment. Some reviews of power shower heads indicate that the claims are untrue, and that the product does not work as is a waste of money.
Open up the actual shower head and remove the factory fitted restrictor.