This kind of the solar presure tank can be connected to the solar collectors. 
1. The upright tank can make the water temperature to different level, it can hot the top water instantly and the special  structure can reduce the cold and hot water to mix together. 
2. The tank inside the building, the connection pipe between the tank and water tap is very short, so that hot water can be used instantly and seldom cold water flows out. 
3. The tank inside the building , the hot water lose less energy than the normal one. 
4. The heater collector and the water tank is separated, which makes the system combine with the building perfectly, and will not reduce the sightseeing for the building and the environment around. 
5. Back up with electric heater so that in the days without sunshine hot water can also be used. 
6. Capacity: 100L, 150L, 200L, 250L, 300L.