Tank: The Vaughn tank is 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 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 ensures 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. An adjustable surface thermostat operates in the 110-170°F range. Integral hi-limit with a manual reset button for over-temperature protection is factory set at 190°F. Upper and lower element configurations are factory wired for non-simultaneous operation.

Insulation: Highly efficient thick non-CFC polyurethane foam insulation meets or exceeds the requirements of ANSI/ASHRAE/IESNA 90.1-2018 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.