The system is essentially composed of 4 parts (from right);
- Manual air pump (on the right)
- Pressure relieve device (on the center)
- Water container (about 20 liters) with membrane (view in section on the left)
- Distribution device with red delivery button (on the left pointing at the tank)
It works like this: the pressure relieve device is moved so that the pump is connected to the manifold; the pump is manually activated (5-6 cycles); the membrane in the tank keeps the water and air separated and transfer to the water the pressure generated by the pump; the water flows from the distribution device when the red button is pushed; when done with the distribution, the pressure relieve device is activated so that the pressure from the pump side is vented (this prevents damage to the membrane inside the pump) while the tank is kept under pressure.