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The Stone Story |
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Unlike conventional glass lined tanks, Vaughn's tanks are protected by the superior Hydrastone® lining which absorbs the water and holds it against the inner tank. |
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" The Rolls Royce of Water Heaters," - Consumer Digest |
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© 2003 Vaughn Corporation |
The heart of every Vaughn Water Heater is the Hydrastone® lining which protects the steel tank (shown at left) from the corrosion action of water. Corrosion in a water heater has essentially two forms: Electrolysis (due to dissimilar metal) and Oxidation (or rusting, as when oxygen contacts a steel surface). The combination of our nonferrous, brass plumbing connection and the seamless 1/2" Hydrastone® lining efficiently protects the inner tank from both forms of corrosion... 
As water first enters the tank, it is absorbed into the finely porous Hydrastone lining This initial water contains oxygen capable of creating corrosion and is therefore aggressive. Some of the aggressive oxygen will contact the steel tank and actually cause a small amount of corrosion. This process of corrosion uses all the oxygen in the initial water supply and changes it from aggressive to inert, non-corrosive water. 
The inert water is now trapped within the Hydrastone® lining by adhesion and is never displaced throughout the life of the heater. A blanket of non-corrosive water lines the entire inner steel tank protecting it from further aggressive water and corrosion, without the need for anode or sacrificial rods. The superior corosion protection and energy saving design features of Vaughn's water heaters are the reasons why they're called...