Exposed shower valves are the most common type of shower valve. They are usually located behind the shower head. Concealed shower valves are another option. They are typically located in the wall behind the shower. Bar shower valves are a popular option for handheld shower heads. They are typically located on the wall near the shower head.You can find shower valves in a range of styles, from traditional shower valves to modern shower valves. They also come in a variety of colours, from antique bronze to chrome, so there is sure to be a valve to match your other bathroom accessories.