Exposed thermostatic shower valves refers to the way the shower valve is mounted on the shower wall. An exposed valve is mounted onto the shower wall so that the whole shower mechanism is visible. However, many shower valves can be mounted either exposed or concealed. This decision or choice may be checked by your bathroom fitter. Recently, exposed shower valves are not only available in Chrome, but Matt Black, Gold Lustre and Nickel finishes to compliment your desired shower room ambiance.