The steel tank interior has a Duraglass coating which guarantees protection against corrosive & fungi formatting agents. Magnesium Anode Prevents electrolytic corrosion, which in turn gives the tank a longer life. The immersion type heating element is constructed from Nickel-Chromium resistance wire sheathed in mineral filling, the whole being encased in a copper tube & sealed against moisture. It has dual functions of non return valve & pressure release An adjustable thermostat disconnects the water heater from electric supply in the event of water exceeding a pre-set temperature. A lasting protection against corrosion. A Metal outer shell coated with a baked white gloss finish, provides an elegant look & offers