Working Model made of glass, to show the concepts involved in a lift pump. Both cylinder and piston provided with non-return float valves and a side tube for outlet.
Working model made of glass. Demonstrates the working principle of the force pump, concept of double valve action of the pump and its ability to eject water at high pressure. Comprises a glass cylinder with non-return float valve at its lower end, which also has an outlet side tube at its lower end, that in turn communicates the lower end of a secondary cylinder also equipped with a non-return float valve. The outlet tube from a secondary cylinder is drawn out into a jet.