Rheem MTS50200 Marathon 50-Gallon Tall Thermal Storage Tank
 
Sells for $1118 + Tax on Amazon
 
50--Gallon Storage Tank
Specifically designed for installation as a thermal storage tank
Large water connections
Tank – impervious to rust, corrosion
Thermally fused element provides protection against ''dry-firing''
 
 
Overview
Marathon® thermal storage tanks feature a lifetime limited tank warranty and a 6-year limited parts warranty*

Designed for Alternative Energy Applications
Specifically designed for installation as a thermal storage tank
Backup electrical element provides 40 gallons or more of heated water
Large water connections for lower pressure drop
Built to Last!
Seamless, blow-molded, polybutene tank – impervious to rust and corrosion
Titanium sheath elements for superior resistance to lime build-up
Multiple layers of filament wound fiberglass give the tank unmatched strength
Tough molded polyethylene outer shell resists dents and scratches
Designed for Easy installation
Lightweight
Water port fittings located at front of storage tank for convenient access
Full port, full flow brass drain valve for fast draining
Factory installed temperature and pressure relief valve and vacuum relief valve
Plus…
Thermally fused element provides protection against “dry-firing”
Bowl shaped bottom allows for complete sediment removal
Recessed drain valve is out of the way of brooms and scrubbers