Tank
The Vaughn HydraStone tank is all welded heavy steel construction designed for 150 psi working pressure and tested to 300 psi. Each tank is centrifugally lined with 1/2" thick seamless high density HydraStone lining with guaranteed 100% coverage of all steel surfaces. All tank openings are non-ferrous solid copper-silicon and are resistant to the corrosive effects of hot water.

Plumbing
3/4" combination cold water inlet and drain, with non-corrosive strata flow diffuser which prevents incoming cold water from mixing too rapidly with the hot water in the tank and assures delivery of more hot water. A 3/4" hot water outlet with a uniquely designed built-in heat trap prevents heated water from radiating through the piping during standby periods.

Electrical
Copper or Incoloy sheathed immersion heating elements with low watt density for prolonged life in 120, 208, 240, 277, 480 volt single phase. User-friendly electronic controller simplifies operation, maintenance, and troubleshooting. Upper and lower element configurations are factory wired for non-simultaneous operation.

Insulation
Highly efficient thick polyurethane foam insulation meets or exceed the requirements of ANSI/ASHRAE/IESNA 90.1-2019 standards for energy efficiency and heat loss.

Jacket
The exterior protective jacket is constructed from high impact composite material which cannot rust or corrode and is maintenance free.