Multi function valve that releases pressure when temperature exceeds set limit and prevents backflow of water. Also drains out water when safety is breached. The wide range of Usha water heaters are specially designed to meet a wide range of applications including use in the kitchen, shower panels, bath tubs, etc. The vibrant range gives you the freedom to choose a design that best complements the decor of your kitchen or bathroom. With circuit breakers, leakage protectors and safety valves all incorporated in the design, Usha Misty storage water heaters are truly best-in-breed water heating appliances. These safety features provide optimum protection against dry heating, over temperature, over pressure and various kinds of electrical leakages.