Features:
1) Solar water heater
2) The inner has the copper coil for heat exchangers
3) We have got European patents

Thermosiphon solar collectors provide Mains Pressure pre-heating via a high
efficiency copper coil heat exchanger installed within the solar collector tank.
The way in which the Mains Pressure solar collector heats water is the same
as the non pressure solar collector. Instead of using the water in the tank
directly, as the Non pressure does, the type uses a 45¡«60 copper coil heat
exchanger inside the tank which provides more than 1.2m² of heat
transfer area. When water flows though the coil, it absorbs heat from the
water inside the solar collector tank. The solar collector tank is therefore
for thermal storage. One advantage of this system is that almost no water
is introduced into the tank (apart from occasional topping up), so corrosion
and scale buildup are almost totally eliminated. Tanks are designed for low
to medium pressure applications, using a gravity feed tank or pressure
reduction valve. Direct connection to Mains Pressure water supply is not
permitted. Please check your local building / plumbing regulations regarding
the installation of water tanks.