Non-pressure solar water heating system
1) The inner tank of the solar water heater is made of SUS304-2B stainless steel plates, and the outer shell of the tank is made of colored steel plates welded with argon arc. The water is clean and drinkable.
2) The thermal insulation of the solar water heaters of the boiler accepts polyurethane foam and its thickness is 55 mm
3) Silicone rings for bonding and sealing
4) Pipes and supports are adjustable. Vacuum tube life is 5 years.
5) Whole glass vacuum tubes accept super hard borax and silicon glass
6) Absorption rate: = 93%, degree of thermal radiation: = 6%
7) It is opposed to 25 mm hail and the life of the whole system can last 15 years