This consists of three parts. The first part is a flexible, hollow, thick walled rubber device in the shape of the old fashioned light bulb, with its thinner end open. Its approximate dimensions are: length - 14 cm, diameter at its broadest part – 10 cm, diameter at the lower open end – 3 cm, rubber thickness – 5 mm.
The second part is a metallic bowl (katori) of approximately 9 cm diameter and 5 cm height, with a hole of about 1.2 cm diameters in the center of its surface.
The third part is an approximately 5 cm long, hollow metallic pipe of about 2 cm diameter. One end of this hollow pipe is welded permanently on to the central hole on the outer surface of the metallic bowl, whereas its other end is free and is inserted into the open end of the rubber device. There is thus an internal connection between all the three parts of the solar pump, which allows the air to pass through from one end to the other.