A concealed thermostatic valve unit that provides a control system for overhead and slide rail shower units. The elegantly rounded control surfaces are designed to complement similarly finished, traditional or minimalist shower units and enhance functionality. A straightforward and intuitive handwheel system enables precise control of both flow and temperature, complying to the TMV2 Approval Scheme. The unit is constructed from high density chrome-plated Solid brass, further accentuating the modern, design-driven visual of this stunning unit.