I just purchased a home that does not have anti-scalding prevention in the shower stall or bath tub. The shower is a two-valve system (hot and cold) and the tub is three valve (hot, cold, diverter). Both of these have ceramic tile on the walls and there is no easy access to get behind the fixtures (the bath tub fixtures are on an external wall). I was wondering if I can install remote pressure valves in the basement for each set of hot and cold lines going to each location to prevent scalding. If this sounds like a reasonable solution, can you recommend a good remote valve?