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• Factory installed waterway fittings - for longer water heater life. Easier installation.
  
• Fully automated controls - immersed Honeywell aquastat.
  
• Ultonium™ Lining - NST tanks are protected from corrosive effects of hot water by an exclusive ceramic porcelain-like coating. The NST high silica Ultonium™ lining provides a tough interior surface for our hot water tanks.
  
• Three protective anode rods - provides added protection against corrosion for long trouble-free service.
  
• Factory installed turbomix fill pipe - cold inlet sediment reducing device. Helps to minimize sediment build up in the tank. Increases first hour delivery of hot water while minimizing temperature build up at top of tank.
  
• Heat exchanger - single-wall 11/2" glass-coated steel (Ultonium™).
  
• Supply and return connections - the 1" npt female connections are located on the front for both the boiler supply and boiler return.
  
• Stand-by heat loss - less than 1/2°F per hour.
  
• Brass drain valve.
  
• T&P relief valve included - all models feature opening on side of tank.
  
• Ten year limited warranty on steel tank and heat exchanger - heavy gauge steel automatically formed, rolled and welded to assure a continuous seam for glass lining.
• 2" Non-CFC foam insulation - covers the sides and top of tank to save energy by retarding loss of heat. Also increases jacket rigidity.
  
• Six year limited warranty on parts.