form_title= Shower Faucet form_header= Install the shower faucet you want in your bathroom! Do you have a working faucet in your bathroom?*= () Yes () No () Not Sure What type of faucet do you want installed?*= _  Do you want the shower faucet to include a massager?*= () Yes () No () Not Sure
Its a loss in water pressure to the shower.
Clean or change the diverter faucet
form_title= Shower Faucet form_header= Install a new shower faucet in your home. What finish do you want on your faucet?*= _  Do you need to remove existing hardware?*= () Yes () No What type of shower do you have?*= _ 
A tub faucet acts as a shower and can be used to bath in the bath tub. It is a pressure valve which makes the flow of water through it constant and gives a nice shower.
Bad vent or particle stoppage
It doesn't but you better run sir/madam their may be a ghost in your bathroom.
Probably someone or something else using water that drops the pressure. The shower head will be a lot more sensitive to pressure drops than other faucets in the house.
Insufficient water pressure or incorrect pipe sizing
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.
It might mean that there is air in the line. Maybe install a water hammer.
I have this problem with my shower head, what I do to fix it is turn on the sink in my bathroom to hot, this usually shuts it up
Get a Delta shower parts replacement kit from Hardware or Plumbing store and rebuild the faucet. Must get the right kit for the exact faucet.
Yes, it can also cross through a two handled faucet. Both the hot and cold sides of the faucet must be on and the flow of water must be stopped or greatly reduced on the outlet side of the faucet. This can occur when a hose with a spray nozzle is attached to a laundry tub faucet with the faucet on and the spray nozzle off, or when a shower faucet is on but the shower spray head is off. When another cold water outlet in the system is turned on then the pressure on the cold side of the laundry tub or shower faucet in question could be lowered below the pressure on the hot side and hot water can flow into the cold water side. There are faucets which have integral check valves which prevent this from occurring. WWW.WOODBRIDGEPLUMBING.COM
Proably the faucet has a worn out washer, replacing the washer should fix the problem.
They are probably not strapped in the wall. If you have a quick closing faucet, there may be water hammer.
Have you got two single faucets or a single lever faucet? It could be a pressure imbalance or it could just need maintenance
The unique thing about the Delta shower faucet are that they provide the best and most unique looking bath tubs and shower fixtures. They are one of the leading providers of shower products.
Do you have hot water at other fixtures in the house? If not you have a water heater problem. If yes the Shower valve needs to be rebuilt if it is a bressure balanced faucet the concentration should be on the pressure balancing spool area of the faucet.
Turning on one faucet will cause a pressure drop at any other faucet that is running, but you say it is a "significant" drop - that implies that you have low water pressure, period. You might to consult with a plumber to see if anything can be done - if you live in a house with very old steel plumbing pipes, replacing them can make a noteworthy difference (it's not cheap, of course). Or possibly, you have an unusually low pressure system, perhaps a gravity feed system. Installing a water pump will solve any inconvenience, such as the shower almost quitting when a toilet is flushed elsewhere.
If you are talking about tub faucet -- if the tub is 15 in. high then about 28 in. to center of faucet -- if shower then about 48 in. from floor to center of faucet.
No conversion, it would need to be replaced with a single handle faucet.