Compact non-pressure vacuum glass tube solar water heater

This system is a kind of open-circulation system, there is a air outlet hole inside the water tank, cold water in and air out at the same time, water tank joined with the vacuum glass tubes together, water inside.

The system can't take any pressure(air-out hole), water circulating inside the vacuum glass tubes, when the water are warmed inside, cold water down and hot water up, it is a kind of natural circulation system.

Suitable for most of low water pressure markets, such as most countries of Asia, Middle-East markets, most countries of Africa, South America markets.

This system must be placed higher than the user, more higher more pressure

When the water tank is full of cold water, you must close the cold water inlet, by hand or by other automatic working set, so there are two kinds of such compact non-pressure system: Automatic compact non-pressure heater and semi-auto compact non-pressure heater.

Automatic system working pressure: 0.2-0.3Mpa, semi-auto system working pressure: 0 Mpa.

Water tank testing pressure: 0.3Mpa

All the items can be fitted with electric heaters as backup( 110V/220V, 1500W, 50Hz).

All items can be fitted with special designed controllers.