Two Heads Spray At Once: Except for the three regular functions, KES shower system also can spray at once from shower head & handheld shower or shower head & tub spout. Keep Water Flow Strong: The showers keep a strong water flow even at ‎a flow rate of 1.8 GPM, 6.8 L/min at 80 PSI. It also reduces expenses on water. Anti-Scald: Pressure-balanced valve prevents water pressure fluctuations, so the shower water temperature will be constant and not change suddenly even when the toilet is flushed or other appliances are utilized with water. No Water hammer, Protect Pipes: The anti-backflow function of check valves and the buffer device inside valve core relieve the impact force of water pressure. All For You: Any question can be told at any time and we'll reply within 12h.