Non-pressure compact system is one of the most economic solar systems with higher efficiency. Heat exchanging is a thermosiphon system. Hot water out depends on Gravity.

Description:
1. Inner tank 0.5mm SUS304 stainless steel made in Korea.
2. Middle polyurethane made by Germany Bayer.
3. Outer tank is 0.5mm color steel.
4. frame is 1.5mm zinc-coated steel.

Technical Specifications:
1. Whole glass vacuum tubes adopt super hard borax and silica glass;
2. Absorption rate: ≥ 94%, thermal radiation rate: ≤ 6%(100);
3. Temperature when exposed to sun without water: 250, 2.5 hours to boiling if using single tube.
4. Resist 25mm hail, life scale can last 20 years.

Features:
1. Inner water tank shell all are welded by automatic welding. Water is pure and drinkable.
2. Heat insulation of water tanks adopts polyurethane foam, thickness is 55mm. Silicon rings to connect and seal them.
3. frame is double used, can be both used for inclined roof and flat plate roof.
4. The tubes and supports are adjustable, power bearing is average, and can assure the vacuum tubes to use long time.
5. If you use electrical appliances to aid heating, to switch off the power supple before bathing.
6. To test the water temperature before using, in order to avoid scalding.