Solar working station

It can control the water level.because there is a ball cock in the assistant tank.and all the coil water flow in via the assistant tank.so when the water level of the water tank is full.it will stop supplying water by closing the water valve.when the water big water tank is sufficient.it will open the water valve then continue to supply cold water

it has different volume as well.the more the bigger assistank.the higher pressure it can endure.besides,it is more beautiful to match uo with suitable size water tank.

Model:5L 8L 12L and more