GROHE safe Pressure Balance Valves mean peace of mind for you and your family with long term, reliable shower protection from scalding and cold shocks. GROHE safe allows a wide comfort zone so you can gradually and precisely regulate water temperature. By combining superior technology with a choice of breath-taking designs, GROHE can provide you with all the elements to enhance your bathing space.Handle limit stop Diaphragm cartridge Check valves Built-in diverter Service stops Diaphragm cartridge & check valves 1/2-Inch universal inlets, 1/2-Inch universal outlets