Tube end supports for compact non-pressure solar water heater

Because the different structure from the pressure system, the glass tubes of non-pressure system are inserted into the water tank directly, water circulating from the glass tubes to the water tank.

In that case when you install the vacuum glass tubes, you can insert the galss tubes into the water tank longer or less, so we can make many kinds of tube end supports.

Materials: nylon, ABS, coated iron, aluminum alloy items for choosing.

And different structure of the tube end supports fit with different frame end pole.

Size: 47mm, 58mm.