Shower Valve Only This product contains only the exposed shower valve allowing you to mix and match your choice of shower hose, riser rail, and handset for a shower that s completely unique to you. We do this to allow you to mix and match your choice of shower hose, riser rail, and handset for a shower that s completely unique to you. Flow Rates (L/Min) - 0.1 bar: 17.3 Don t let your underachieving shower get you down, get up and do something about it! The Mira Element Thermostatic Exposed Mixer Shower Valve is a brilliant purchase for those wanting to boost their water performance. Its simple and straightforward design makes this valve a stylish and modern addition to any family bathroom. With the easy to use single control for flow and temperature, you ll be able to achieve your.