... will open its valve,the tap water flow in the water tank,if the water is full,it will close the ... tubesDiameter of solar tubeLength of solar tubeHeat PipeSuggestivecapacity of water tankEffectivelight area CN47-1.5-1818pcsĂ 47mm1.5MHas100L2. ... of solar water heaters,including compact Non-pressurized solar water heater.Compact Pressurized solar water heater,Spilt Pressurized solar water heater,and ...