In a separate solar water heater system, a water storage tank with a built-in heat exchanger is necessary to heat your water and have it readily available for use. It is possible to use an existing tank with no heat exchanger, but it will require a 2nd pump, a plate heat exchanger and more complicated design. There will also be extra heat loss to the surroundings. It is best to go with a special solar water heating tank.

Inner tank material: Food Grade SUS 304-2B 1.5 mm thickness.
Outer tank material: Galvanized Steel 0.6 mm thickness.
Rock Wool insulation (Enviornmentally friendly, thickness as good as using polyurethane)
In Tank Heat exchangers are made of TU1 copper and thickness of 1mm, diameter is 12mm

Magnesium bar installed for water purification

Heat exchanger port size: 1/2" Male NPT

Water Inlet/Outlet Ports: 3/4" Female NPT

Top Pressure Relief Valve Port: 3/4" Female NPT

Drain port: 3/4" Female NPT (bottom of tank under feet for easy draining), drain valve included

Electric Heater: 1" Port with thermostat & electric heater included.

3/4" Exhaust Port for tank cleaning

Pressure Relief Valve Included

Includes mounting gear and screws for tank feet.