Sell Non-Pressure Semi-Auto Solar Water Heater (China (Mainland))

Semi-automatic solar energy heater It is the oldest and main item of the solar water heaters, semi-automatically supplying water means you must open the cold water valve to load the cold water in by youself, and when the tank is full, you must wait until the water tank is full and close the cold water valve also by youself. The main tank are always with hot water, when you use the hot water, the cold watet can\'\'t come in and mix with the hot water, that is to say you can use out all of the hot water, there are no cold water come in when you use it. Working without any water pressure, which can resist max water pressure is 0.1-0.2Mpa, must be installed higher than the user. Only one pipe for inlet and outlet of the water. Mow most are fitting only with KF frames(roof style and ground style together). More economic than other items. Which can be fitted with electric heater( 220V,1500W,50Hz) We can do in OEM way. We can do the low pressure items with 47/37x1500mm,47/37x1600mm,58/47x1800mm,58/47x1900mm,58/47x2100mm,70/58x1800mm,70/58x2100mm tubes, all are high efficiency tubes( sc tubes). Capacity from 90l - 360l.