Hot Water Woes

sdbrown1

Hello People

I have a shower where one rotary knob controls hot and cold.
what could the problem be when I have to turn the knob almost 360 degrees (355) to get hot water, and if I turn it back 1/8 in it becomes warm. Should there be that much bifference between the hot and cold?

Thanks in advance.

boman47k

What kind of pipe supplies the plumbing system?

Ron The Plumber

Replace the cartridge in it.

sdbrown1

I am not sure about the piping, the wall is closed in.
However, about the cartridge, is that behind the on/ off knob?

Ron The Plumber

Yes remove the handle. What brand is this valve?